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Born: 08 July 1872, Cabra Parade, Dublin / Roebuck House, Clonskeagh, Dublin
Entered: 17 April 1890, St Stanislaus College, Tullabeg, County Offaly
Ordained: 29 July 1906, Milltown Park, Dublin
Final Vows: 02 February 1911, St Francis Xavier, Gardiner Street, Dublin
Died: 27 November 1945, St Vincent's Nursing Home, Dublin

Part of the St Ignatius, Lower Leeson Street, Dublin community at the time of death

Younger brother of Frederick Gill - LEFT 1928

Early education at CUS Dublin, Clongowes Wood College SJ and University College, St Stephen’s Green

Father (Henry Joseph Gill) was MP for Westmeath and Limerick

by 1896 at Leuven Belgium (BELG) studying
by 1908 at Oxford England (ANG) studying Science
by 1910 at Drongen Belgium (BELG) making Tertianship
by 1917 Military Chaplain : 2nd Royal Irish Rifles BEF France

◆ Jesuits in Ireland https://www.jesuit.ie/blog/damien-burke/a-sparrow-to-fall/

A sparrow to fall
Damien Burke
A BBC Northern Ireland documentary, Voices 16 – Somme (BBC 1 NI on Wednesday 29th June, 9pm) explores the events of 1916 through the testimony of the people who witnessed it and their families. Documentary makers and relatives of Jesuit chaplain Willie Doyle were shown his letters, postcards and personal possessions kept here at the Irish Jesuit Archives. In the 1920s, Alfred O’Rahilly used some of these letters in his biography of Fr Willie Doyle SJ. Afterwards they were given to Willie’s brother, Charles, and were stored for safekeeping in the basement of St Francis Xavier’s church, Lower Gardiner Street, Dublin in 1949. In 2011, they were accessioned into the archives. Fr Willie Doyle SJ was one of ten Irish Jesuits who served as chaplains at the battle of the Somme (1 July- 18 November 1916): seven with the British forces; three with the Australian. Their letters, diaries and photographs witness their presence to the horror of war.

Fr Henry Gill SJ, 2nd Royal Irish Rifles (11 July 1916):
Just a line to say I am still alive. We are of course, as always, “in it”...I have been in, and I feel I know more than I want about shells of all sizes and conditions. It is a horrible and squalid business. Trenches full of mud with bodies of dead Germans and British lying unburied all along. Please God it will end soon, and that we may be able to forgot it all as quickly as possible. Gill was tasked with writing to relatives of soldiers who had been killed. These letters followed a pattern, where the following were mentioned, even if false: a quick death, little suffering and recent reception to the sacraments. He only lived a few minutes after he was shot and can have suffered but little pain, He always went to Confession and Holy Communion before an attack, now you may therefore be at ease about him. The letter was written by Gill to Maggie Duffy of Belfast in September 1916. Her husband, John Duffy was killed at the battle of the Somme in July 1916. Your Husband lived a good life and died a Hero’s death, that will not make your sorrow less, but it will help you to bear it in resignation to God’s will, Who, does not even a allow a sparrow to fall without his Providence

https://www.jesuit.ie/blog/damien-burke/the-last-parting-jesuits-and-armistice/

The last parting: Jesuits and Armistice
At the end of the First World War, Irish Jesuits serving as chaplains had to deal with two main issues: their demobilisation and influenza. Some chaplains asked immediately to be demobbed back to Ireland; others wanted to continue as chaplains. Of the thirty-two Jesuits chaplains in the war, five had died, while sixteen were still serving.
Fr Henry Gill SJ, on leave on 10 November 1918 wrote:
In the mean time I had made arrangement for a trip of the greatest possible interest to myself. I was to be motored to Chaumout to get the train to Paris...and on the way I was to pay a visit to Domremy the birthplace of Joan of Arc. I looked forward to this visit with great pleasure. I had set out from Rouen, where the Saint was put to death, to begin my work at the front, and now after almost four years I was to visit her birthplace, and her Basilica, and to have the opportunity of making a pilgrimage to thank her for her protection during these years. For I had set out under her patronage. Fr Gill physically survived the war, but mentally, would suffer from what we call today post-traumatic stress, but in his time, was called nerves.

◆ Irish Province News
Irish Province News 1st Year No 3 1926
Fr Henry Gill has received a communication from the President of the French Republic thanking him for distinguished service during the late war.

Irish Province News 6th Year No 3 1931
Rathfarnham :
Our Minister, Fr. Henry Gill, has had the honour of being elected a member of the Royal Irish Academy.

Irish Province News 21st Year No 1 1946
Obituary :
Fr. Henry Gill (1872-1890-1945)
Fr. Henry Gill died very peacefully in St. Vincent's Nursing Home at 8.30 a.m. on Tuesday, November 27th, whilst Mass was being offered for his intentions by two or three of the Community, at Leeson Street, He had been ailing for the past six months with an internal trouble which was diagnosed as cancer of the liver, but he was mercifully spared any acute pain, and it was only in the last few days of his life that his heart began to show serious signs of weakness. Indeed he took an active interest in the routine of daily life throughout his illness, and three days before his death was still able to correct final page proofs of a small “Life of Saint Joseph” which he had written during the past year. At the foot of the last page of these proofs he wrote in a hand that was shaky, but still legible : “Saint Joseph, Patron of a Happy Death, pray for us”.
Fr. Gill was born at Roebuck House near Dublin on July 8th, 1872. He lived to be the eldest surviving son of the late H. J. Gill, formerly a member of the Irish Party and head of the well-known publishing firm of Messrs. M. H. Gill and Son, Ltd. His grandfather had been Lord Mayor of Dublin, and Fr. Gill was a staunchly loyal son of the city of Dublin throughout his long life. He was educated at first in a small day-school at No. 6 Harcourt Street, where Newman had formerly opened one of his Houses for resident students of the Catholic University. From this preparatory school Henry went to Clongowes, where he remained until the summer of 1889. He then spent some months as a student at old University College on St. Stephen's Green, and did not enter the novitiate until April of the following year. In later life he used to tell a humorous tale of the downcast young citizen of Dublin who journeyed by train and car to the Tullabeg of those far off days. His vocation, so he would argue, was a clear instance of the triumph of God's grace over every natural inclination! After two years in the Bog, Henry came back to the city and spent the next three years and a half at Milltown Park, where he was beadle of the Juniors and attended lectures at the old College in Mathematics and Science. Thence he went to Louvain for his Philosophy, 1895-8, where he was brought into contact with professors who were eager to explain traditional principles of philosophy in terms of modern science. On his return from Louvain Mr. Gill spent the next five years in the Colleges (Limerick, Galway and Clongowes), but gave little promise at this time of the distinctions that were to come to him in later life. He was indeed curiously unable to teach a straightforward class, even in his own favourite subjects, though he was later to display an exceptional gift for the exposition and quiet criticism of scientific principles. From 1903-7 he studied Theology in Milltown Park, and was ordained there by Archbishop Walsh on July 18th, 1906.
Fr. Gill was then granted permission by Fr. Conmee to study the Physical Sciences at Cambridge for the next two years. Professor J. J. Thompson was then organising the Cavendish Laboratories as a centre of world-famous scientific research, and Fr. Gill had the good fortune to be associated for a time with some of the men who were later to make history in the development of modern Physics. He never lost the memory of those happy days; and when his old Professor published his autobiography in 1936, Fr. Gill reviewed it in Studies under the well-chosen title : “Brave Days at Cambridge”. He was a student of Downing College, but resided in St. Edmund's House where he had the late Most Rev. Dr. McNulty, Bishop of Nottingham, as his friend and fellow-student. Fr. Gill's own interests were centred at this time on the problems of seismography, and he read a paper to the British Association in 1913 in which he put forward an ingenious theory to explain the distribution of earthquakes in time and space. He was also keenly interested in the development of Wireless Telegraphy - then in its initial stages - and was accustomed to give popular lectures in Dublin on this and kindred subjects. He attended many of the later annual meetings of the British Association, and was frequently invited to preach at some Catholic church during its sessions.
After his period at Cambridge Fr. Gill was sent to Tronchiennes in Belgium for his Tertianship. He was then stationed for three years in Belvedere, until he came to Rathfarnham Castle as its first Spiritual Father in 1913. A year later came the First Great War, and Fr. Gill. was one of the first to send in his name to Fr. Provincial as volunteering for work as Army Chaplain. His offer was accepted, and he spent the next four years in the trenches of Flanders, with no more interruption. than the customary short leaves from active service. Those who remember his visits to Rathfarnham during these intervals will recall the impression of a man who seemed strangely ill-assorted with military life. Yet the plain truth is that both officers and men of the regiment to which he was attached (Second Battalion of the Royal Irish Rifles) were devoted to him, and the gallantry with which he responded to every claim on his services during those four grim years of trench warfare is attested by the double award of Military Cross and Distinguished Service Order. One officer who was with him throughout those four years and who was present at his funeral spoke with real emotion of his memories. “He seemed like a lost soul wherever you met him”, was his comment, “but he was always there when wanted, and was afraid of no man”. His unfailing sense of humour and his great gifts of companionship made him a special favourite with the officers mess. But, to the end of his days, he was in touch with some of the men who bad served under him, and their letters revealed the same genuine affection for their old ‘Padre’.
After the war Fr. Gill came to University Hall for five years, where he assisted Fr. George Roche and Fr. Wrafter in their work for the students of University College, and was also able to continue for a. time his former research-work. But his vitality had been much lessened by the long experience of the war-years, and he soon abandoned active research-work. . He went as Minister to Belvedere College in 1923. Here he spent the next seven years, and became a very loyal Belvederian. He was then transferred as Minister for one year to Rathfarnham Castle. The last change came in 1931, when he joined the Leeson Street Community as their Fr. Minister and later as Spiritual Father. For the last fourteen years of his life it is no exaggeration to say that Fr. Gill's kindly personality and the stimulus of his conversation made community life a joy to many of his brethren. He was also, for many years past, a regular contributor to Studies, The Irish Monthly and the Irish Ecclesiastical Record. His contributions to the latter were published in book form in two small volumes entitled “Jesuit Spirituality” (1935) and “Christianity in Daily Life” (1942), both of them full of his characteristic common sense. A selection of the many essays on scientific topics which he had contributed to Studies, Thought and the Irish Ecclesiastical Record was issued by Messers. Gill and Son in 1943 under the excellent title “Fact and Fiction in Modern Science”. It was at once most favourably received both in England and Ireland. In the United States the impression made was so remarkable that Fordham University. undertook to produce a special American edition of this work, which was issued some months before Fr. Gill's death. He also published in 1941 a short biography of the celebrated Jesuit physicist, Fr. Roger Boscovich, which was no more than a brief sketch of a more ambitious work which he had planned for some years past, but was unable to complete owing to his failing, health. May he rest in peace.

◆ James B Stephenson SJ Menologies 1973

Father Henry Gill 1872-1945
Fr Henry Gill was born at Roebuck House Dublin on July 8th 1872, son of HJ Gill, former Irish Party Member of Parliament, and head of the publishing firm, Gill’s O’Connell Street Dublin.

Henry was educated at Belvedere College and entered the Society in 1890, after a short period as a student at ‘6 St Stephen’s Green. In the course of his studies he displayed remarkable talent in science, and consequently, after his ordination, he was sent to Cambridge for tow years to study under Sir J Thompson.

On the outbreak of the First World War, he volunteered as a chaplain and served throughout the whole course. After the War he resided at University Hall for 5 years, and finally after various periods as Minister in various Houses, he settled down in Leeson Street for the rest of his life as Spiritual Father and writer.

He was a regular contributor to “Studies”, the “Irish Ecclesiastical Record” and the “Irish Monthly”. His published works include : “Jesuit Spirituality”, “Christianity in Daily Life”, “Fact and Fiction in Modern Science”. The latter book is still a favourite and enjoys a steady sale in the United States. He also published a biography of the celebrated Jesuit physicist Fr Boscovitch.

He died on November 27th 19456. He was a deeply religious man, with a remarkable sense of kindly humour, and his sayings at recreation and his stories are still recounted to the younger generation.

◆ The Belvederian, Dublin, 1946

Obituary

Father Henry Gill SJ

On Nov 27th, in St Vincent's Nursing Home, died very peacefully, Fr Henry Gill SJ. He was well known to many Belvederians and his passing means for them the loss of an esteemed friend.

From 1909-12 he was on the teaching staff here, and was also Director of the BVM Sodality. Then again from 1923-30 he was Minister, Director of the Sodality of the Holy Angels, and of the Conference of St Stanislaus. Those who were here during those years will well remember him for his kindly humour and deep spirituality.

A man of great gifts, and one who used them well and carefully, this quiet, unassuming man had a busy and an active life. After his earlier studies at Louvain, he studied at Cambridge from 1906-08, under Prof J J Thompson, at the Cavendish Laboratories.

Then came the Great War, and he was one of the first to volunteer as a chaplain. The war record of this quiet man will come as a revelation to many. He received, during these four years, the double award of DSO and MC, and his unfailing sense of humour and quiet gifts of companionship made him a special favourite with the men.

Still another side of his work was to be revealed in his later days - in his writings. He had been for many years quietly contributing to Studies, The Irish Monthly and The Irish Ecclesiastical Record. His contributions to the latter were published in book form in two small volumes entitled “Jesuit, Spirituality” (1935), and “Christianity in Daily Life” (1942), both of them full of his characteristic common sense. A selection of his many contributions on scientific subjects was issued in 1943 under the title, “Fact and Fiction in Modern Science”. Three days before his death, he corrected the final proofs of a small “Life of St. Joseph”. At the foot of the last page of these proofs he wrote in a hand that was shaky but still legible, - “St Joseph, patron of a Happy Death, pray for us”.

It was a fitting ending to a life which was to be crowned by a happy death. RIP

◆ The Clongownian, 1946

Obituary

Father Henry Gill SJ

Henry Gill was the second of the six sons of Mr H J Gill, JP, MA, head of the publishing firm of M H Gill & Son of Dublin. Katharine Tynan Hinkson wrote a delightful account of her friend Mrs Gill and of the family life at Roebuck House; it showed from what a good source was derived the charm which Fr Henry's many friends always found in him. All the boys went to Clongowes, and during the last two decades of the 19th century the name “Bottles” was in familiar and affectionate use; its origin, according to the legend, had something to do with the relation between a gill and a pottle, two antique measures of capacity which we were supposed to know something about.

Henry left Clongowes in 1889, and entered the novitiate at Tullabeg the following year, hating it but feeling he had to do it. Having to do it, he did it thoroughly, and after a very few years the stamp of the Society on him was unmistakeable. Fortunately, while it deepened the spiritual side of his character, it did not destroy or even diminish his exquisite sense of the comical, a source of continual surprise and delight to those he lived with.

After the usual round of studies and teaching, he was ordained at Milltown Park in 1906. During his studies he had shown particular aptitude for Physics, and as a Scholastic he read a paper (I think to the RDS), embodying the results of some ingenious research work. After his ordination he went to Cambridge, where he worked in the Cavendish Laboratory under J J Thomson and took his MA degree. It was the beginning of a new era in Physics, inaugurated chiefly by Thomson's theories and experiments. Fr Gill was profoundly interested, then and later, and his interest found expression in a number of articles in various journals. These articles formed the core of his book, “Fact and Fiction in Modern Science”, which appeared in 1943, and which was warmly received in England and America. An American edition was sponsored by Fordham University.

In 1913 he expounded to the British Association a new theory of the origin of earthquakes, which he supported by some very striking experiments. But in 1914, as soon as the war began, he offered his services as a chaplain, and served through the whole war. He was awarded the MC and the DSO, besides various foreign decorations; officers and men in the battalion to which he was attached testified to his heroic courage and devotion and his unfailing gaiety in the worst circumstances. I spoke to him once of this. He said: “Well, one made the offering of one's life at Mass in the morning, and then it didn't matter”. His deepest and most real interests were the eternal ones.

These interests found expression in his books, “Jesuit Spirituality”, “Christianity in Daily Life”, and “St Joseph”. This last was the theme of his meditation during the last two years of his life; indeed he finished it on his death-bed, and the invocation at the end, St Joseph, “patron. of a happy death, pray for us”,' was written by him just two days before he died, Death found him as cheerfully ready as life had always found him. May he rest in peace.

M F Egan SJ

◆ The Crescent : Limerick Jesuit Centenary Record 1859-1959

Bonum Certamen ... A Biographical Index of Former Members of the Limerick Jesuit Community

Father Henry Gill (1872-1945)

A native of Dublin and a member of the well-known publishing family, was educated at Clongowes and entered the Society in 1890. He pursued his higher studies at University College, Dublin, Louvain, and Milltown Park, where he was ordained in 1906, and Cambridge University. He spent one year of his regency at the Crescent, 1898-1899. Father Gill showed little aptitude for teaching in spite of his splendid intellectual gifts. He volunteered for a chaplaincy in the first world war and was many times decorated and mentioned in despatches. He wrote much on scientific subjects for learned reviews and was the author of three widely read spiritual books: Jesuit Spirituality, Christianity in Daily Life, St. Joseph.

Born: 19 March 1869, Ranelagh,Dublin
Entered: 30 October 1886, Loyola House, Dromore, County Down
Ordained: 27 July 1902, Milltown Park, Dublin
Final Vows: 15 August 1906, St Francis Xavier, Gardiner Street, Dublin
Died: 16 April 1939, St Ignatius College, Riverview, Sydney, Australia

Transcribed : HIB to ASL 05/04/1931

Early education at St Stanislaus College SJ, Tullabeg & Clongowes Wood College SJ

by 1891 at Leuven, Belgium (BELG) studying
by 1905 at St David’s, Mold, Wales (FRA) making Tertianship

◆ Royal Irish Academy : Dictionary of Irish Biography, Cambridge University Press online :
O'Leary, William J.
by David Murphy

O'Leary, William J. (1869–1939), Jesuit priest and scientist, was born 19 March 1869 in Dublin, son of Dr William H. O'Leary (qv), MP for Drogheda 1874–80, surgeon, and professor of anatomy at the Royal College of Surgeons in Ireland, and Rosina O'Leary (née Rogers). Educated at St Stanislaus College, Tullabeg, King's Co. (Offaly), and Clongowes Wood College, Co. Kildare, he entered the Society of Jesus in 1886, completing his noviciate at Dromore, Co. Down. He studied philosophy and astronomy at Louvain and theology in Dublin, and then taught science at Clongowes. In 1908 he travelled to Strasbourg and studied seismology under Prof. Meinka, and on his return to Ireland he set up a meteorological and seismological observatory at Mungret College, Co. Limerick, remaining as its director until 1915. At the request of a joint committee of the British Association and the Royal Meteorological Society, he carried out a series of upper-air investigations using sounding balloons (1911–14). This was the most westerly series of observations taken in Europe, and the results of O'Leary's research were published in the journals of both societies. By 1911 he had also completed a new seismograph, and this instrument was later praised by the astrophysicist and cosmologist, (Edward) Arthur Milne (1896–1950).

In 1915 he moved to the Jesuit community at Rathfarnham Castle, Dublin, and founded a seismological observatory there. He constructed his own seismograph, which had a moving mass of one-and-a-half tons. This instrument was still giving excellent service in the 1940s. He had also become aware of the need for extremely accurate timing in seismology and, turning his attention to chronometry, developed a free-pendulum clock which he patented in 1918.

In 1929 he went to Australia, where he became director of the observatory at Riverview College, New South Wales. In conjunction with the Lembang observatory in Java, he began a programme of photographic research on variable stars. He discovered several new variable stars, and the results of his research were published in the journals of the Riverview and Lembang observatories and also in the Astronomische Nachrichten. An accomplished and humorous speaker, he was extremely popular as a lecturer at scientific and public meetings. He supervised (1933–4) the construction of one of his free-pendulum clocks for Georgetown University. The clock was built by E. Esdaile & Sons in Sydney and shipped to Washington DC in August 1934, and O'Leary visited Georgetown in 1938. He was a leading member of several scientific societies, including the RIA (elected 1919), the Royal Society of New South Wales, the Société Astronomique de France, and the Seismological Society of America. He was also a member of the Australian National Committee on Astronomy and was elected (January 1938) a fellow of the Royal Astronomical Society.

He collapsed and died of a heart attack while playing golf (16 April 1939), and was buried at the Gore Hill cemetery, Sydney. There is a collection of his papers in the Irish Jesuit archives in Dublin, including seismological journals that he kept while at Rathfarnham. In February 1959 Georgetown University donated to the Smithsonian Institution its O'Leary free-pendulum clock and the collection of letters relating to its construction.

Fr William J. O'Leary, SJ, files in Irish Jesuit Archives, Dublin; The Catholic Press, 20 April 1939; Monthly Notice of the Royal Astronomical Society, vol. 100, no. 4, February 1940; Bulletin of the National Association of Watch and Clock Collectors, vol. 28, no. 240, February 1986, 44–51

◆ Jesuits in Ireland : https://www.jesuit.ie/news/jesuitica-earth-shakers-2/

JESUITICA: Earth-shakers
In the days when Rathfarnham Castle was still a residence for Jesuit university students, there was a seismograph (pictured here) housed in a small building off the drive. It was the creation of Fr William O’Leary, a Jesuit scientist with an avid interest in pendulums, who had already constructed a seismograph in Mungret in 1909. He had to keep air currents and spiders at bay, since their delicate vibrations could simulate the effect of major earthquakes on the sensitive instrument. He had dreadful luck in September 1923 when his seismograph was temporarily out of order during a catastrophic (over 100,000 dead) earthquake in Japan. But his pioneering work introduced generations of Jesuit students to the rigorous measurement and technical skill required in scientific research.

◆ David Strong SJ “The Australian Dictionary of Jesuit Biography 1848-2015”, 2nd Edition, Halstead Press, Ultimo NSW, Australia, 2017 - ISBN : 9781925043280
William O'Leary was educated at Tullabeg and Clongowes; his father was a surgeon and a Member of Parliament. While at Tullabeg he developed an interest in science. He entered the Society at Dromore, 30 October 1886, did his juniorate at Tullabeg, 1888-90, studied philosophy at Louvain, 1890-93, where he did much experimental work with the inverted pendulum. He later taught mathematics and physics at Clongowes, 1893-99, studied theology at Milltown Park, 1899-03, and finished his studies with tertianship at Mold, Wales, 1904-05. In 1900 he published a textbook on mechanics.
In an obituary notice in the “Monthly Notices of the Royal Astronomical Society, Vol. 100, No. 4,” 1940, it said that O'Leary's “mind ran on original lines. He was never content with stereotyped textbook solutions, he had to work out each problem for himself from first principles. In this way he was able to study many questions from a fresh angle and to develop original lines of research various branches of science. Combined with this was a highly developed inventive talent and the ability to design new instruments and the skill to construct them”.
After studies, O'Leary taught physics, chemistry and mathematics, and was assistant prefect of studies at Mungret, 1905-15, as well as director of the seismological and meteorological observatory At the request of a Joint Committee of the British Association and the Royal Meteorological Society he carried out a series of upper-air investigations by means of sounding balloons. These were the farthest west observations had been made in Europe at the time.
One problem in seismometry was to obtain an instrument with a fairly long period and consequent high sensitivity O'Leary provided a satisfactory solution by constructing a two
component horizontal seismometer with trifilar suspension. One of these instruments was completed in Mungret in 1911. Later, he lectured in mathematics to the juniors at Rathfarnham, 1915-18, and started seismological observatory His “O’Leary Seismograph” was at that time the first and only one in the world. He also worked with Professor John Milne at the Shide Observatory in the Isle of Wight, and from whom he acquired the Milne-Shaw seismograph for his own seismography station at Rathfarnham. With these two seismographs, O'Leary was able to supply earthquake information to the whole country. The need for accurate timing in seismology turned O'Leary's attention to chronometry He saw that the secret of precision timing was to be sought in a free pendulum. He was one of true pioneers in the development of the free-pendulum clock in 1918.
O’Leary was minister, procurator and teacher at Belvedere, 1918-19, and then lectured mathematics and physics to the philosophers at Milltown Park, 1919-29.
He was was appointed to the Riverview observatory in July 1929. Besides introducing various improvements in the seismological department, he initiated a programme of photographic research on variable stars in collaboration with the Boscha Observatory, Lembang. He also invented and built a blink comparator, which proved successful in searching for new variable stars. He discovered many new variable stars and published several papers on variables in “Publications” of the Riverview and Ban Len Observatories and in the “Astronomisrlne Nachrichten”. Other inventions included a recording anemometer and a petrol gas plant.
Scientists and the general public appreciated O’Leary's lectures on astronomy and seismology His light and humorous touch combined with his clarity of exposition to render topics intelligible and interesting. Together with his scientific work, he found time to do good work as a priest. Many found him a wise counselor, and a humble and lovable priest and colleague. He was a little man, happy, charming, and quite unassuming in spite of his deep knowledge and high reputation.
He remained at Riverview until his death in 1939, directing the observatory until 1937 when Daniel O'Connell became director. The end of his life occurred when he collapsed and died on the golf course just after driving off. The suddenness of his death was a shock to the community, but he had had a heart condition for some time. This did not prevent him from planning fresh research and for new instruments. The day before he died he discovered a number of new variable stars with his newly completed comparator, and that night worked at the telescope taking star photographs. O'Leary was a member of the Royal Irish Academy, the Royal Society of NSW, the Société Astronomique de France, the Seismological Society of America, Past President of the NSW Branch of the British Astronomical Association, and a fellow of the Australian National Committee on Astronomy.

Note from Daniel O’Connell Entry
At this time he came under the influence of William O'Leary, the Irish Jesuit astronomer and seismologist, who at that time was director of Rathfarnham Castle Observatory in Dublin. While at the Riverview Observatory, working under William O'Leary.........

Note from Edward Pigot Entry
His extremely high standards of scientific accuracy and integrity made it difficult for him to find an assistant he could work with, or who could work with him. George Downey, Robert McCarthy, and Wilfred Ryan, all failed to satisfy. However, when he met the young scholastic Daniel O'Connell he found a man after his own heart. When he found death approaching he was afraid, not of death, but because O’Connell was still only a theologian and not ready to take over the observatory. Happily, the Irish province was willing to release his other great friend, William O'Leary to fill the gap.

◆ Irish Province News
Irish Province News 1st Year No 2 1926

SCIENTIFIC WORK AND INVENTIONS - Fr William O'Leary :
1909 Seismological observatory established at Mungret
1910 New type of seismograph invented and constructed at Mungret; A meteorological station in connection with the Meteorological Office established at Mungret; A complete set of recording instruments was installed; New type of anemometer, recording average and wind direction, invented and erected.
1912 The systematic investigation, by sounding balloons of the upper atmosphere over Ireland was begun. This important work was entrusted to Mungret by a joint committee of the Royal Meteorological Society and the British Association, as representing the International Upper Air Investigation Society, with headquarters at Strasburg. Mungret was the only Irish station entrusted with this work; The Erin Petrol Gas Generator invented by Messrs Maguire & Gatchell took over the construction of those machines, and erected a large number of them throughout Ireland.
1916 The Rathfarnham Seismological Station was established. The instrument, of the Mungret type, but of an improved design, was constructed at Rathfarnham.
1918 Precision clock invented, embodying the principle of a free pendulum. A model of a “Vertical Component” Seismograph invented some 3 years previously, was exhibited at the British Association Meeting at Edinburgh.

Irish Province News 9th Year No 1 1934
An Australian contemporary gives the following welcome news :
The Rev William O'Leary, SJ., Director of Riverview Observatory has been elected President of the New South Wales branch of the British Astronomical Association. in succession to Mr. W. F. Gale. Father O'Leary is a famous scientist, with a special knowledge of earthquakes. He studied astronomy in Louvain, Belgium, and succeeded the late Father Pigot to the charge of Riverview Observatory in July, 1929. Formerly he was Professor of Mathematics and Physics at the Jesuit College, Milltown Park, Dublin.

Irish Province News 12th Year No 2 1937

Rathfarnham :
Seismological Station : A change was made in the method of recording un the O'Leary seismograph. The records are now made on smoked paper by a stylus which gives a very clear, delicate trace. This method replaces the former ink inscriptions and is calculated to give much greater sensitivity, The improvement was carried out at the suggestion of Father O'Leary, Director of Riverview College Observatory, who sent all the necessary detail of construction. On January 7th the first big earthquake of the year was recorded and the success of the new method was assured.

Irish Province News 14th Year No 3 1939
Obituary :
Father William O’Leary
Born, Dublin, 19th March , Educated Tullabeg, Clongowes
1886 Entered, Dromore, 30th October
1887 Dromore, Novice
1888-89 Tullabeg, Junior
1890-1892 Louvain, Philosophy
1893-1898 Clongowes, Doc
1899-1902 1899-1902 Milltown, Theology
1903 Clongowes, Doc
1904 Mold, Tertian
1905-07 Mungret, Doc. Adj. Praef. stud, Cons. dom.
1908-09 Mungret, Doc. Doc. Praes. Sod. B.V.M., Cons. dom.
1910-12 Mungret, Doc. Doc. Praes. Sod. B.V.M., Cons. dom.; Dir obser, seismol, et meteorology
1913-14 Munget, Doc an 17, Praes. Sod. SS Angel; Dir obser, seismol, et meteorology
1915 Rathfarnham, Lect. Math., Conf. N.N. ; Cons. dom. an 1
1916 Rathfarnham, Praef Spir, Lect. Math.; Cons. dom an 2.; seismol
1917 Rathfarnham, Praef Spir, Lect. Math.; Cons. dom an 3.; Dir obser
1918 Belvedere, Minister. Doc..' Cons. dom.
1919-23 Milltown, Lect. Math. et Phys. , Conf. dom.
1924 Milltown, Lect. Math. et Phys.; Conf. N.N.
1925-26 Milltown, Lect. Math. et Phys.; Praef ton; Theol et Phil
19277-28 Milltown, Lect. Math. et Phys.; Praef ton; Theol et Phil; Conf. dom.
1929 Australia, Riverview, Dir obser, seismol; Astron meteor
1930-37 Australia, Riverview, Dir obser, seismol; Astron meteor; Conf dom
1938-1939 Australia, Riverview, Adj Dir Spec; Dir sect seismol; Conf dom

Father O'Leary died in Australia, Sunday, April 16th, 1939
Father O'Leary was born in Dublin, 1869. His father William O'Leary, well known for his medical ability, and for time a Home Rule M.P. in the party of Isaac Butt. Father O'Leary was educated at Tullabeg and Clongowes. He was best known as a teacher of physics and astronomy in the Colleges and Scholasticates, and for his work on seismology. His scientific work tends to make us forget his other gifts as a preacher and Retreat-giver, in which he was remarkably successful. As student at Louvain he developed an interest in pendulums, which was the basis of his seismological activities. A full account of his work in that department has been given in the “Irish Jesuit Directory” for 1938. A visit to Prof. J, Milne's observatory at Shide, Isle of Wight, was the occasion of his applying his knowledge of pendulums to the construction of his first instrument at Mungret. During the following years he constructed and equipped a really good seismological and meteorological station there, which he left behind him as a monument to his energy and activity when he was transferred
to Rathfarnham. Here, with characteristic perseverance, he continued his work, and set about designing and constructing the instrument now in use at Rathfarnharn, in conjunction with a standard Milne-Shaw seismograph added to the Observatory in 1932. This instrument was not meant to replace the “O'Leary Seismograph”, but to give greater accuracy in the recording of earthquakes. The horizontal pendulum of the latter has a mass of 1 lb. , the O'Leary pendulum has a mass of 1.5 tons. This is the only instrument of its kind in existence, and gives an exceedingly large and clear record.
An essential element in the recording of earthquakes is a very accurate clock, which enables the exact time to be recorded on the chart. Father O'Leary designed such a clock, which includes features of great novelty. In connection with this instrument Father O'Leary paid a visit to the United States. The clock has been described by the director of a well-known observatory as “a piece of first-class and most original work”. It is of interest to put on record that Father O'Leary not only designed both clock and seismograph, but made almost every part of each, and erected them himself. In addition to these instruments he designed a system of supplying petrol-gas for laboratories far from a supply of coal gas. This apparatus had a considerable success, and for some years was on the market, until trade difficulties stopped the sale. In addition to the records of his observations, Father O'Leary wrote a text-book on mechanics.
When Father Pigot died in Australia, in 1929, then a portion of the Irish Province, Father O'Leary was chosen to succeed him as director of the Riverview College Observatory, which included astronomy, seismology and meteorology, where his knowledge and experience enabled him to do much valuable work.
His death came suddenly and unexpectedly, as he had been working in the observatory only the night before. The Australian and home newspapers contained most appreciative notices of his work. An indication of the esteem in which he was held may be gathered from the Press account of his funeral. Archbishop Gilroy presided at the Mass, at which were present Archbishop Duhig and Bishops Coleman, Dwyer and Henscke, together with some 200 priests and many representatives of Catholic schools. The laity included many distinguished scientists and representative men, such as the Attorney-General, etc. Father O'Leary was an F.R.A.S., and past-President of the British Astronomical Association.
Those who knew Father O'Leary will miss him not only as a worker, but still more for his great charm and his many gifts, which made him an excellent community man and endeared him to all by his cheerful companionship and great sense of humour. He was noted for his punctilious observance of all his spiritual duties, and died as he had lived, working for God. RIP
The following came from an Irish priest :
"During the last few weeks I have felt that I would like to write and offer to you and your distinguished Order my sympathy on the death of Father O'Leary. Many, I am sure, have written many others, too, better equipped than I, shall write about him but as a humble priest, I would like to add my humble tribute to the memory of a saintly priest and a learned Jesuit.
When I took up the paper a few weeks ago and read the cabled account of his death, I could read no further. I was truly grieved, for I felt I had lost a great friend, a friend who was, I thought, in perfect health, when I met him only a few months ago. Our friendship began ten years ago on the emigrant ship that was relentlessly taking both of us to Australia. He, fairly advanced in years, I, a young priest just ordained. He, the eminent scientist and inventor, on his way to take up one of the highest and most important positions in Australia, I an obscure priest, to take up duty as a curate in some parish in the Diocese of Sydney. None of us young priests realised that we were travelling with such a distinguished man. There was nothing that led us even to suspect it. He moved among us, spoke freely to us offered us his sympathy for he knew our hearts were full. His heart, too, was full, for he felt then that he would never see again his beloved Ireland. I often thought it was a pity that he should have to leave Ireland at his time of life, for he loved Ireland with a love that was passionate, yet tender. Whenever I visited him at Riverview, that College so beautifully situated on an eminence overlooking Sydney's wondrous harbour, his thoughts ever wandered back to Ireland. Like every exile. as he wrote himself, he hankered for the green hills of holy Ireland. Others shall appraise his work as a scientist and astronomer - to me he was always the humble, sympathetic, priestly friend. With his passing I have lost a great friend, and Australia has most certainly lost an able and scholarly Jesuit, and saintly priest.
I am sure that his soul passed through Ireland on its way to Eternity. May he rest in peace".

◆ James B Stephenson SJ Menologies 1973

Father William O’Leary SJ 1869-1939
The name of Fr William O’Leary will go down in the Province as the founder of the seismograph at Rathfarnham Castle. He was also the inventor an ingenious clock and numerous other scientific devices, as well as author of a textbook on mechanics. But these achievements as a scientific inventor were hardly half the man.

He had a remarkable oratorical ability, and many a priest of the Province will recall his elocution classes … “O Mary, call the cattle home, call the cattle home across the sands of Dee”. He was a preacher and retreat giver of no mean order,

In 1939 he was appointed to the Directorship of the Observatory at Riverview, Australia. His end came suddenly on April 16th 1939, but found him not unprepared, for he was a religious of punctilious observance and scrupulous even to a fault in the matter of poverty.

◆ Interfuse

Interfuse No 109 : Summer/Autumn 2001

LEST HE BE FORGOTTEN : FR WILLIAM O’LEARY

Kevin A Laheen

There is a rumour doing the rounds in Rathfarnham at present that the building that once housed the seismograph will shortly be used as a snack-bar and tea room. Just in case there may be some truth in this rumour it would seem opportune to recall the name of Fr William O'Leary, SJ whose pioneer work in recording earthquakes won international acclaim for the seismograph station at Rathfarnham Castle.

Willie O'Leary was born in Dublin on 19 March 1869. The O'Leary family lived in Ranelagh. His father was a distinguished doctor, a Member of Parliament, and a personal friend of Isaac Butt. Willie spent the early years of his schooling in Tullabeg and then moved off to Clongowes when the two colleges were amalgamated in 1886. After his novitiate in Dromore he moved, back to Tullabeg to begin his Juniorate studies. In Tullabeg he manifested a great interest in and aptitude for science. It was during his philosophy years at Louvain that he did some experimental work on the inverted pendulum. This was the beginning of a lifelong work in the study of seismology which won for him an eminence in that science and in meteorology, and also, to a lesser degree, in astronomy.

During his years in Mungret College, 1905-15, his theories about earthquakes began to take practical shape. He built a house of solid stone some distance from the main building and in it he continued his study and experiments. His work during those years is well documented in the MUNGRET ANNUAL. However, it was in Rathfarnham Castle during the years 1915 17 that he built his own seismograph and the clock that recorded the time at which an earthquake took place. The famous “O'Leary Seismograph” was the only one of its kind in the world at that time and widespread interest in it was evident in international science circles.

He was on personal friendly terms with Professor John Milne, whose observatory in Shide, the Isle of Wight, he had visited on more than one occasion. Through this contact he acquired the Milne-Shaw seismograph for the station in Rathfarnham Castle. This instrument was not a substitute for Fr O'Leary's one, but both worked in tandem, recording the same earthquake though by different methods. The O'Leary seismograph recorded the quakes on a sheet of smoked paper on a large revolving drum, while the Milne-Shaw instrument recorded them by photography. It was interesting to watch the white lines being traced on the smoked paper as the drum revolved slowly while every minute the two glass pen nibs gave a tiny kick to the right in order to record the time.

Fr O'Leary's work received widespread notice in scientific publications. He was a Feilow of the Royal College of Science, and also a President of the British Astronomical Association. His reputation was so outstanding that when Fr Edward Pigot, SJ died in Australia in 1929, Fr O'Leary was requested to take his place as Director of the Observatory at Riverview College - “one of the highest and most important positions in Australia”. It was there during his early sixties that his work was highly appreciated and where at the same time he had an opportunity to further his own knowledge of astronomy.

Research and experimental work such as was done by Father O'Leary, is a very lonely occupation, and few people outside the researcher's field will manifest much interest. Fr O'Leary was fortunate in the fact that Fr Thomas V Nolan, SJ who was his Rector in Mungret College, appreciated his work and gave him every encouragement and support. Later Fr Nolan was appointed Provincial and in that office continued his sponsorship of Fr O'Leary's work. Providence was again on Fr Willie's side when they were both assigned to Rathfarnham Castle, Fr Nolan being the Rector and again continued to support him, especially in the erection of the seismograph station. He also encouraged Fr Willie to maintain his friendship with Professor Milne and to visit him at his observatory at Shide. Without this support one might be justified in asking if Fr O'Leary's experiments would ever have bome the fruit they eventually did.

In addition to his eminent place in the international community of scientists he was also a gifted preacher. He was much in demand as a retreat director, and was especially skilled in directing retreats to the clergy. His contemporaries found him a most affable companion who gladly shared his knowledge with anyone who manifested even the slightest interest in it. He died in Australia in 1939 in his seventieth year. Present at his funeral two archbishops, three bishops, over two hundred priests, and representatives from various branches of science. A priest who first met him on the ship en route for Australia, on hearing of his death, wrote, “In his passing I have lost a great friend, and Australia has certainly lost an able and scholarly Jesuit and a saintly priest”.

Should the building, which housed his seismograph station in Rathfarnham, ever become a snack-bar, it would certainly be appropriate to have a plaque or other memorial put up there. This would record the significant contribution to science that was made in that building, and would prevent the name and work of this great Jesuit from being forgotten.

I feel it is appropriate to conclude with a personal memory. One morning, midway through the Second World War, Dick MacCarthy and I were working in the seismograph station. Suddenly I noticed that the glass pens on the great revolving drum began to register a quivering motion. I called Dick and, in a matter of seconds, the pens went off in a swaying motion from left to right. We both realised that we were witnessing the great O'Leary seismograph recording an earthquake. Before the pens settled down, Dick had calculated that the epicentre of the earthquake was in the Pacific Ocean. In those days the house telephone was definitely off limits for all of us except Dick, who was allowed to use it for business connected with the station. He telephoned the Dublin newspapers with the news. An hour or so later we both cycled to the university for the morning lectures. Standing at the gates of the building was a newsboy crying out the greatest piece of misinformation ever heard, “Stop press! Stop press! Earthquake at Rathfarnham Castle!” We both had a laugh, and Dick said, “I bet the Rector will blame the pair of us for that”.

During the days of the war when news of any sort was censored and generous blackouts were imposed on any type of information, we were a real sensation among our fellow students for bearing the first bit of uncensored news to reach Dublin that day. Dick, who remained a close friend of mine all his life, died in Hong Kong a couple of years ago.

◆ The Clongownian, 1939

Obituary

Father William J O’Leary SJ

Father O’Leary was born in Dublin on March 19th, 1869. His father was Dr W O'Leary, a well-known doctor and a Home Rule MP in Isaac Butt's party. Father O'Leary was educated at Tullabeg (1880), but came to Clongowes at the amalgamation for a few months in the summer of 1886 to prepare for the “Autumn Matric”. He was a master at Clongowes 1893-'98, and again in 1903; after his ordination. Practically his whole life was occupied in the teaching of science and mathematics at Clongowes and Mungret, and in the Scholasticates of Rathfarnham and Milltown Park. During his philosophical studies at Louvain he became interested in pendulums, and did some very interesting experiments with compound pendulums, obtaining some beautiful curve records. This interest seems to have been the occasion of his interest in seismology later on. A visit to the observatory of Prof J Milne FRS., at Shide IOW., was the beginning of his work in that departinent. At Mungret he created a seismological and meteorological station which he fitted up with instruments of his own design. During this time he also made observations on high-altitude conditions by means of balloons. He was transferred to Rathfarnham in 1915, where he still further improved his apparatus, Here he designed and constructed one of the instruments still in use in the present station. This instrument is the only one of its kind in existence and gives a very open record. It is of the inverted pendulum type, and the “bob” weighs 1.5 tons! It was designed, constructed all except the “bob” and erected by Father O'Leary himself, who, in addition to his other gifts, was a skilled mechanic. Later on he was professor of Mathematics, Physics and Astronomy to the Jesuit philosophers at Milltown Park.

On the death of Father Pigot SJ, Director of the seismological and astronomical observatory of Riverview College, Sydney, he was appointed as his successor, and went to Australia in 1929. His previous studies and practical experience had fitted him for this position, and enabled him to do splendid work in his new post. Here, in addition to seismology, his work included such branches of astronomy as observations on solar radiation, and on variable stars. It is to be hoped that a full account of his work in Australia will be given us. As an inventor he also designed a method of supplying laboratories not in possession of coal gas, with petrol gas, both for illumination and heating. He published a text-book on mechanics, but, with the exception of the records of his observation, does not seem to have written anything else. Reference must be especially made to an accurate clock which he designed and constructed on principles first applied by him, which was for use in connection with his seismograph. Such a clock is an essential element in the recording of earthquakes, for it is necessary that a mark be made on the chart very accurately every minute. His clock combined the properties of extreme accuracy with the means of recording the minutes on the chart. Referring to this clock, Father D O'Connell SJ, the present director of the Riverview observatory, says that it is a most excellent and original piece of work. Except in the patent specification, the details have never been published. It is to be hoped that this will be included in an account of his scientific work.

But it would be a mistake to allow the record of his work as a scientist to render us oblivious of his other and far inore important qualities. All who knew Father O'Leary as a friend and companion need no reminder of his wonderful charm and gifts of character which made him popular with all. A great love of his country, and a strong sense of humour were characteristic of him. He has a fine voice, and as a preacher he was no less in demand than as a lecturer and giver of retreats. His friends have lost one who will not easily be replaced.

Himself the most unassuming of men, he was honoured by his scientific brethren, no less than he was loved by his brethren in religion. He was a member of the British Association, and more than once was special preacher at their meetings; he was also a Fellow of the Royal Astronomical Society, and Past President of the NSW branch of the British Astronomical Association.

His death came suddenly. He had been suffering from his heart, but this did not interfere with his work, and he had been working in the observatory only the night before. An indication of the esteem in which he was held in Australia may be gathered from the press account of his funeral. Archbishop Gilroy presided at the Requiem Mass, at which assisted Archbishop Duhig, and Bishops Coleman, Dwyer and Henscke. In addition, there were 200 of the clergy, as well as representatives of the Catholic educational establishments. A large number of distinguished laymen were also present, including the Attorney-General, members of the University and the president of Astronomical Society and Government Astronomer. RIP

H V Gill SJ

-oOo-

The following appreciation is from the pen of one who for many years taught in the same college as Father Willy :

For many years after his ordination, Father O'Leary taught in Mungret, and for a considerable portion of that period acted as Prefect of Studies. A splendid master, be had the gift of imparting knowledge clearly and of getting the boys thoroughly interested in their work. His subjects were Science, Mathematics and Latin. His lessons in Geometry were particularly fascinating - his own consummate skill in the use of instruments and the beautifully accurate figures which graced his blackboard made his pupils quite enthusiastic in their efforts to imitate and emulate him. He made the dry bones of that subject live -no easy task where boys are concerned.

He was highly popular with all the boys, though he never showed any undue leniency. He was strict, but not severe, just and impartial. All these features were prominent in another sphere of school life; Father O'Leary possessed histrionic talent in a high degree. His production, in conjunction with the late Father Willie Doyle, of the “Mikado” inaugurated the revival of theatricals in Clongowes. In Mungret he staged the “Private Secretary”, a very successful performance, one of many similar triumphs.

In the spiritual sphere he did untold good. He was director of the sodalities, a superb preacher, being a first class orator. Only those who lived with him could appreciate to the full the power of his example. He was popular, as we have said, but he used this as a powerful influence for good.

Boys are proverbially prone to hero worship, and this small, though tremendously strong, straightforward, cheerful and great hearted priest won their affection and admiration. They appreciated his great qualities in life, and we trust they will not forget him in death. Requiescat.

John Casey SJ

-oOo-

Father H V Gill has mentioned above that Father O'Leary had a great love for his country; here is an extract from a letter of Father Willy's to a friend in Ireland, written for the New Year :--

“Dear Ireland, how I wish I could see you again. I am too old to fall in love with strange lands and I love you alone. May God bless every tree and every blade of grass in you, may God bless every mother's son in you, and may God keep the Old Faith in you”.

◆ Mungret Annual, 1937

Obituary

Father William O’Leary SJ

The death of Father O'Leary in Australia will be deeply regretted by many of his past pupils. An old Mungret boy of Father O'Leary's time there writes to the Editor :

“I was at Mungret for five years, and during all that time Father O'Leary was a master there. He taught us Latin, Religious Knowledge, Mathematics and Science. But he taught us many others things besides these. I don't think there was any master of my time there the boys thought more of, or who had more influence with them. For all his lack of inches - he only looked about 5ft. 4ins, in spite of the black hair brushed straight up from his forehead - he was a most virile personality. I will always carry with me as one of the clearest memories of Mungret the picture of Father O'Leary pacing up and down the stone corridor as we went on our way to Mass, wearing his biretta and with his head sunk on his chest for all the world like Napoleon”.

For a man of his intellectual attainments allied as they were in him with a natural agility of mind and speed of accomplishment - it must have been a heart-breaking task to expound the elements of euclid to a junior grade class not specially gifted above their fellows. Only once in my time did I ever see it overcome him, and that was an occasion that none who saw will ever forget. One day in dealing with a boy whom the Lord never meant to learn euclid, he allowed himself to be betrayed into one or two natural expressions of impatience - just so much and no more. It made no impression on us nor on the boy concerned - we were I fear a thick-skinned lot - but next day when the class began, Father O'Leary called out the boy and apologised to him coram publico in terms which penetrated to our subconscious preceptions far deeper than any sermon. Talking of sermons reminds me that he was the boys' favourite preacher and confessor. He had a deep musical voice and a gift of oratory and also an ability to teach elocution which were all his own. I don't know if elocution is still taught in the schools or if it has been crowded out by the modern programme : to judge by the sort of thing one hears in “talks” from Radio Éireann even from possessors of University Degrees - the art of speaking and reading aloud is a lost one. Anyone who ever was in Father O'Leary's class or in one of his plays learned how to open his mouth and sound his consonants. He used to teach us Byron's poem about the Assyrian coming down like a wolf on the fold - I have every word of it yet - and when you came to the line ‘With the dew on his brow and the rust on his mail’ - woe betide you if you put a ‘Jew sitting on the poor man's brow’.

Science was, of course, his first love, but even that gave way before his love for Ireland. To hear him speak of Irish history or to listen to him sing ‘The West's Awake’, as we so often did was to know that the fire that burned in the breast of his distinguished father burned just as fiercely in his own. He must have known when he left Ireland in 1929 that the chances of his ever seeing home again were very small how hard that thought must have been those of us who knew him can well realise. He went like so many other Irishmen - and Mungret men have gone - where duty called him, and if he rests at last far from his own land that he loved so well, there lie around him the bones of many of his kith and kin to foregather at the resurrection. All the boys of his time in Mungret will join with me in a prayer for one than whom no one stood higher in our affections as a priest, a master, or a friend”.

D Gleeson