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Yearly Archives: 2021


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Death of Mathematician Sir William Rowan Hamilton

Sir William Rowan Hamilton, Irish mathematician, Andrews Professor of Astronomy at Trinity College, Dublin, and Royal Astronomer of Ireland, who makes important contributions to classical mechanics, optics, and algebra, dies in Dublin on September 2, 1865, following a severe attack of gout.

Hamilton is born in Dublin on August 4, 1805, the fourth of nine children born to Sarah Hutton (1780–1817) and Archibald Hamilton (1778–1819). He is part of a small but well-regarded school of mathematicians associated with Trinity College, Dublin, which he enters at age eighteen. He is said to have shown immense talent at a very early age. Astronomer Bishop Dr. John Brinkley remarks of the 18-year-old Hamilton, “This young man, I do not say will be, but is, the first mathematician of his age.”

Trinity College awards him two Optimes, or off-the-chart grades. He studies both classics and mathematics and is appointed Professor of Astronomy just prior to his graduation. He then takes up residence at Dunsink Observatory where he spends the rest of his life.

Although Hamilton regards himself as a pure mathematician rather than a physicist, his work is of major importance to physics, particularly his reformulation of Newtonian mechanics, now called Hamiltonian mechanics. This work has proven central to the modern study of classical field theories such as electromagnetism, and to the development of quantum mechanics. In pure mathematics, he is best known as the inventor of quaternions.

Hamilton’s scientific career includes the study of geometrical optics, classical mechanics, adaptation of dynamic methods in optical systems, applying quaternion and vector methods to problems in mechanics and in geometry, development of theories of conjugate algebraic couple functions, solvability of polynomial equations and general quintic polynomial solvable by radicals, the analysis on Fluctuating Functions, linear operators on quaternions and proving a result for linear operators on the space of quaternions, which is a special case of the general theorem which today is known as the Cayley–Hamilton theorem. He also invents Icosian calculus, which he uses to investigate closed edge paths on a dodecahedron that visit each vertex exactly once.

Hamilton retains his faculties unimpaired to the very last, and steadily continues the task of finishing the Elements of Quaternions which occupies the last six years of his life. He dies in Dublin on September 2, 1865, following a severe attack of gout precipitated by excessive drinking and overeating. He is buried in Mount Jerome Cemetery in Dublin.


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The Battle of Chantilly

The predominately Irish 6th Louisiana Infantry Regiment fights at the Battle of Chantilly (or Ox Hill, the Confederate name), which takes place on September 1, 1862, in Fairfax County, Virginia, as the concluding battle of the northern Virginia campaign of the American Civil War. Thomas J. “Stonewall” Jackson‘s corps of the Army of Northern Virginia attempts to cut off the line of retreat of the Union Army of Virginia following the Second Battle of Bull Run but is attacked by two Union divisions. During the ensuing battle, Union division commanders Isaac Stevens and Philip Kearny are both killed, but the Union attack halts Jackson’s advance.

On the morning of September 1, 1862, Union Maj. Gen. John Pope orders Maj. Gen. Edwin Vose Sumner of the II Corps, Army of the Potomac, to send a brigade north to reconnoiter. The army’s cavalry is too exhausted for the mission. But at the same time, he continues his movement in the direction of Washington, D.C., sending Maj. Gen. Irvin McDowell‘s III Corps to Germantown (on the western border of modern-day Fairfax, Virginia), where it can protect the important intersection of Warrenton Pike and Little River Turnpike that the army needs for the retreat. He also sends two brigades from Maj. Gen. Jesse L. Reno‘s IX Corps, under the command of Brig. Gen. Isaac Stevens, to block Jackson. Maj. Gen. Philip Kearny’s division from the III Corps follows later that afternoon.

Jackson resumes his march to the south, but his troops are tired and hungry and make poor progress as the rain continues. They march only three miles and occupy Ox Hill, southeast of Chantilly Plantation, and halt, while Jackson himself takes a nap. All during the morning, Confederate cavalry skirmish with Union infantry and cavalry. At about 3:00 PM, Stevens’s division arrives at Ox Hill. Despite being outnumbered, Stevens chooses to attack across a grassy field against Brig. Gen. Alexander Lawton‘s division in the Confederate center. The Union attack is initially successful, routing the brigade of Colonel Henry Strong and driving in the flank of Captain William Brown, with Brown killed during the fighting. The Union division is driven back following a counterattack by Brig. Gen. Jubal Early‘s brigade. Stevens is killed during this attack at about 5:00 PM by a shot through his temple.

A severe thunderstorm erupts about this time, resulting in limited visibility and an increased dependence on the bayonet, as the rain soaks the ammunition of the infantry and makes it useless. Kearny arrives about this time with his division to find Stevens’s units disorganized. Perceiving a gap in the line he deploys Brig. Gen. David B. Birney‘s brigade on Stevens’s left, ordering it to attack across the field. Birney manages to maneuver close to the Confederate line but his attack stalls in hand-to-hand combat with Maj. Gen. A.P. Hill‘s division. Kearny mistakenly rides into the Confederate lines during the battle and is killed. As Kearny’s other two brigades arrive on the field, Birney uses the reinforcements as a rear guard as he withdraws the remainder of the Union force to the southern side of the farm fields, ending the battle.

That night, Maj. Gen. James Longstreet arrives to relieve Jackson’s troops and to renew the battle the following morning. The lines are so close that some soldiers accidentally stumble into the camps of the opposing army. The Union army withdraws to Germantown and Fairfax Court House that night, followed over the next few days by retreating to the defenses of Washington D.C. The Confederate cavalry attempts a pursuit but fails to cause significant damage to the Union army.

The fighting is tactically inconclusive. Although Jackson’s turning movement is foiled and he is unable to block the Union retreat or destroy Pope’s army, National Park Service historians count Chantilly as a strategic Confederate victory because it neutralizes any threat from Pope’s army and clears the way for Lee to begin his Maryland campaign. The Confederates claim a tactical victory as well because they hold the field after the battle. Two Union generals are killed, while one Confederate brigade commander is killed. Pope, recognizing the attack as an indication of continued danger to his army, continues his retreat to the fortifications around Washington, D.C. Lee begins the Maryland Campaign, which culminates in the Battle of Antietam, after Pope retreats from Virginia. The Army of the Potomac, under Maj. Gen. George B. McClellan, absorbs the forces of Pope’s Army of Virginia, which is disbanded as a separate army.

The site of the battle, once rural farmland, is now surrounded by suburban development in Fairfax County. A 4.8-acre (19,000 m²) memorial park, the Ox Hill Battlefield Park, is located off of State Route 608 (West Ox Road) and lies adjacent to the Fairfax Towne Center shopping area and includes most of the Gen. Isaac Stevens portion of the battle, about 1.5% of the total ground. The park is under the jurisdiction of the Fairfax County Park Authority. In January 2005, the Authority approves a General Management Plan and Conceptual Development Plan that sets forth a detailed history and future management framework for the site.

A small yard located within the nearby Fairfax Towne Center has been preserved to mark the area crossed by Confederate troops to get to the Ox Hill battlefield.

(Pictured: Color lithograph “General Kearney’s gallant charge,” published by John Smith, 804 Market St., Philadelphia. From the Library of Congress.)


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Birth of Charles Lever, Novelist & Raconteur

Charles James Lever, Irish novelist and raconteur, is born in Amiens Street, Dublin, on August 31, 1806. According to Anthony Trollope, his novels were just like his conversation.

Lever is the second son of James Lever, an architect and builder, and is educated in private schools. His escapades at Trinity College, Dublin (1823–1828), where he earns a degree in medicine in 1831, are drawn on for the plots of some of his novels. The character Frank Webber in the novel Charles O’Malley is based on a college friend, Robert Boyle, who later becomes a clergyman. He and Boyle earn pocket-money singing ballads of their own composing in the streets of Dublin and play many other pranks which he embellishes in the novels Charles O’Malley, Con Cregan and Lord Kilgobbin.

Before seriously embarking upon his medical studies, Lever visits Canada as an unqualified surgeon on an emigrant ship. Arriving in Canada, he journeys into the backwoods, where he is affiliated to a tribe of Native Americans but has to flee because his life is in danger, as later his character Bagenal Daly does in his novel The Knight of Gwynne.

Back in Europe, Lever pretends he is a student from the University of Göttingen and travels to the University of Jena and then to Vienna. He loves German student life and several of his songs, such as “The Pope He Loved a Merry Life,” are based on student-song models. His medical degree earns him an appointment to the Board of Health in County Clare and then as a dispensary doctor in Portstewart, County Londonderry, but his conduct as a country doctor earns him the censure of the authorities.

In 1833 Lever marries his first love, Catherine Baker, and in February 1837, after varied experiences, he begins publishing The Confessions of Harry Lorrequer in the recently established Dublin University Magazine. Before Harry Lorrequer appears in volume form (1839), he has settled on the strength of a slight diplomatic connection as a fashionable physician in Brussels.

In 1842 Lever returns to Dublin to edit the Dublin University Magazine and gathers round him a typical coterie of Irish wits. In June 1842 he welcomes William Makepeace Thackeray, the author of The Snob Papers, to Templeogue, four miles southwest of Dublin, on his Irish tour. The O’Donoghue and Arthur O’Leary (1845) make his native land an impossible place for Lever to continue in. Thackeray suggests London, but Lever requires a new field of literary observation and anecdote. His creative inspiration exhausted, he decides to renew it on the continent. In 1845 he resigns his editorship and goes back to Brussels, whence he starts upon an unlimited tour of central Europe in a family coach. Now and again, he halts for a few months and entertains to the limit of his resources in some ducal castle or other which he hires for an off season.

Depressed in spirit as Lever is, his wit is unextinguished. He is still the delight of the salons with his stories, and in 1867, after a few years’ experience of a similar kind at La Spezia, he is cheered by a letter from Lord Derby offering him the more lucrative consulship of Trieste. The $600 annual salary does not atone to Lever for the lassitude of prolonged exile. Trieste, at first “all that I could desire,” became with characteristic abruptness “detestable and damnable.”

Lever’s depression, partly due to incipient heart disease, partly to the growing conviction that he is the victim of literary and critical conspiracy, is confirmed by the death of his wife on April 23, 1870, to whom he is tenderly attached. He visits Ireland in the following year and seems alternately in high and low spirits. Death had already given him one or two runaway knocks, and, after his return to Trieste, he fails gradually, dying suddenly, however, and almost painlessly, from heart failure on June 1, 1872, at his home, Villa Gasteiger. His daughters, one of whom, Sydney, is believed to have been the real author of A Rent in a Cloud (1869), are well provided for.


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Death of Short Story Writer Michael Banim

Michael Banim, Irish short story writer and brother of John Banim, dies in Booterstown, a coastal suburb of Dublin, on August 30, 1874.

Banim is born in Kilkenny, County Kilkenny on August 5, 1796. He is educated at Dr. Magrath’s Catholic school. He goes on to study for the bar, but a decline in his father’s business causes him to retire from his studies. He returns home to take over the family business, which he returns to prosperity, restoring his parents to comfort, both material and mental. In 1826 he visits John in London, making the acquaintance of many distinguished men of letters. When the struggle for Catholic emancipation is at its height, he works energetically for the cause.

Around 1822, Banim’s brother John broaches his idea for a series of national tales. He assists John in the O’Hara Tales, where he uses the name “Abel O’Hara,” and there is difficulty in allocating their respective contributions. While John is the more experienced writer, Michael provides material based on his social observations. They revise each other’s work. He writes in such hours as he can snatch from business and is the principal author of about thirteen out of the twenty-four works attributed to the brothers, including Crohoore of the Bill-Hook, The Croppy, and Father Connell. He is amiable, unambitious, modest, and generous to a degree. He keeps himself in the background, letting his younger brother have all the honor of their joint production. In 1828 he has the honor of a visit from the Comte de Montalembert, who has read the O’Hara Tales and is then on a tour through Ireland.

When his brother John is struck down by illness, Banim writes and earnestly invites him to return to Kilkenny and share his home. “You speak a great deal too much,” he observes in one letter, “about what you think you owe me. As you are my brother, never allude to it again. My creed on this subject is, that one brother should not want while the other can supply him.” However, John remains in France, seeking medical care in Paris.

Following his brother’s death in 1842, Banim writes Clough Fionn (1852), and The Town of the Cascades (1864). In 1861 he writes prefaces and notes for a reprint of the “O’Hara” novels by the publishing firm William H. Sadlier, Inc. of New York City. Besides their desire to give a true picture of their country, still crippled and prostrate from the effects of the Penal Laws, the Banims are undoubtedly influenced by the Romantic movement, then at its height.

In 1840, Banim marries Catherine O’Dwyer with whom he has two daughters, Mathilde and Mary. Although a man of means, in less than a year he loses almost the whole of his fortune through the failure of a merchant. Poor health follows. He is appointed postmaster of Kilkenny in 1852, a position he holds until illness forces him to retire in 1873. He also serves a term as mayor. His health failing, he goes with his family to reside at Booterstown, near Dublin, where he dies on August 30, 1874. His widow is granted a civil list pension.


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Death of Lawrence Parsons, 4th Earl of Rosse

Lawrence Parsons, 4th Earl of Rosse, KP, FRS, a member of the Irish peerage and an amateur astronomer, dies on August 29, 1908. His name is often given as Laurence Parsons.

Parsons is born at Birr Castle, Parsonstown, King’s County (now County Offaly), the son and heir of the astronomer William Parsons, 3rd Earl of Rosse, who built the “Leviathan of Parsonstown” reflecting telescope, largest of its day, and his wife, the Countess of Rosse (née Mary Field), an amateur astronomer and pioneering photographer. He succeeds his father in 1867 and is educated first at home by tutors, like John Purser, and after at Trinity College, Dublin and the University of Oxford. He is the brother of Charles Algernon Parsons, inventor of the steam turbine.

Parsons serves as the eighteenth Chancellor of Trinity College, Dublin between 1885 and 1908. His father serves as the sixteenth Chancellor. He is Lord Lieutenant of King’s County and Custos Rotulorum of King’s County from 1892 until his death. He is also a Justice of the Peace for the county and is appointed High Sheriff of King’s County for 1867–68. He is knighted KP in 1890.

Parsons also performs some preliminary work in association with the practices of the electrodeposition of copper sulfate upon silver films circa 1865 while in search of the design for a truly flat mirror to use in a telescope. However, he finds it impossible to properly electroplate copper upon these silver films, as the copper contracts and detaches from the underlying glass substrate. His note has been cited as one of the earliest confirmations in literature that thin films on glass substrates experience residual stresses. He revives discussion in his work Nature’s August 1908 edition after witnessing similar techniques used to present newly devised searchlights before the Royal Society.

Although overshadowed by his father (when astronomers speak of “Lord Rosse”, it is almost always the father that they refer to), Parsons nonetheless pursues some astronomical observations of his own, particularly of the Moon. Most notably, he discovers NGC 2, a spiral galaxy in the constellation Pegasus.

Parsons is elected a Fellow of the Royal Society in December 1867 and delivers the Bakerian lecture there in 1873. He is vice-president of the society in 1881 and 1887. From 1896 he is President of the Royal Irish Academy. In May 1902 he is at Caernarfon to receive the honorary degree LL.D. (Legum Doctor) from the University of Wales during the ceremony to install the Prince of Wales (later King George V) as Chancellor of that university.


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Grote Markt, Brussels Bombing

On August 28, 1979, a bomb explodes under an open‐air stage on the Grote Markt in Brussels, Belgium where a British Army band is preparing to give a concert, injuring at least 15 persons, including four bandsmen, and causes extensive damage. Mayor Pierre van Halteren of Brussels says the Irish Republican Army (IRA) claims responsibility for the bombing in a telephone call to city hall.

The bombing comes just a day after Earl Mountbatten of Burma and three others are killed in a bombing in the Irish Republic, and 18 British soldiers die in an attack in Northern Ireland. The IRA claims responsibility for both attacks.

The band is from the Duke of Edinburgh’s Royal Regiment, which is stationed in Osnabrück, West Germany. The bombing occurs only minutes before the band is to have begun a concert in the broad square, a major tourist site surrounded by centuries‐old buildings. However, only 6 of the 30 members of the band are on the makeshift stage when the bomb explodes at about 3:00 PM. The others had left the stage to change into their red dress uniforms after setting up music stands and instruments.

The band is held up in traffic and is late arriving for the concert. The police say that if the bomb had gone off later, during the concert, the casualty toll would have been heavier.

Before the IRA telephone call is reported, Earl Nicoll, military attaché at the British Embassy in Brussels, says, “I’d guess it is either the IRA or people sympathetic to their aims. It is clearly a manifestation they wanted to hit the band, not any Belgians.”

The temporary stage is used for daily concerts to mark the city’s 1,000th birthday. A police spokesman says the explosives were under the stage floor in the back, on the side away from the square. At the time of the explosion only a few hundred people, most of them tourists, are in the square, which is lined by outdoor cafes, flower stalls and centuries‐old guildhalls.

The blast creates a 90‐by‐30‐foot hole in the stage floor, and severely damages the back wall and the ceiling. It shatters windows in the ancient buildings. A police spokesman says investigators did not yet know what kind of bomb was used. Officials estimate the damage at $134,000 to $167,000.

Irish guerrillas are accused of responsibility for several other attacks in Belgium in recent months, including one in June 1979 involving Gen. Alexander M. Haig Jr., then Supreme Allied Commander Europe for the North Atlantic Treaty Organization (NATO).

A number of other recent terrorist attacks on the continent are blamed on the IRA. On March 22, 1979, Sir Richard Sykes, Britain’s Ambassador to the Netherlands, and his Dutch valet are shot and killed as the envoy leaves for work in The Hague. On the same day, a Belgian bank employee is shot to death in front of his home in suburban Brussels in what police believe is a case of mistaken identity on the part of the IRA. Officials believe the gunmen were after Sir John Killick, deputy chief of Britain’s mission to the North Atlantic Treaty Organization, which has its headquarters in Belgium.

On July 6, a bomb that officials believe to be planted by the IRA goes off in the British consulate building in Antwerp, Belgium, causing damage but no injuries. Four days later, two bombs go off at two British Rhine Army barracks in Dortmund, West Germany, causing extensive damage but again no injuries. The IRA claims responsibility for those and other bombings at facilities of the 50,000‐member Rhine Army.

(From: “I.R.A. Sets Off Bomb at Belgian Concert,” The New York Times, August 29, 1979)


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Birth of Niall Ó Dónaill, Irish Language Lexicographer

Niall Ó Dónaill, Irish language lexicographer, is born in Ailt an Eidhinn, Loughanure, County Donegal, on August 27, 1908.

Ó Dónaill is the olderst of the six children of Tarlach Ó Dónaill and Éilis Nic Ruairí from Grial, Loughanure. They own a little land and a few cows. His father spends June to November working in Scotland and dies when he is 13 years old. He himself spends summers working in the tunnels in Scotland.

Ó Dónaill receives his education at Scoil Loch an Iúir in Loughanure before gaining a scholarship to St. Eunan’s College in Letterkenny. Another scholarship takes him to University College Dublin to study Irish, English and History. During his time in university Ó Dónaill spends his summers teaching at Coláiste Bhríde in Rann na Feirste, County Donegal.

Ó Dónaill writes the book Bruigheann Féile which is based on stories of pastimes in the Gaeltacht town Loughanure and its surrounding area. His book Na Glúnta Rosannacha is first published in 1952.

Ó Dónaill is most famous for his work as editor of the 1977 Irish-English dictionary Foclóir Gaeilge-Béarla, which is still widely used today.

In June 1982 Ó Dónaill is awarded a Doctor of Letters (D.Litt) by Trinity College Dublin. He is awarded Gradam an Oireachtais at Oireachtas na Gaeilge in 1980.

Ó Dónaill dies in Dublin on February 10, 1995.


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Blair & Ahern Meet in Aftermath of the Omagh Bombing

British Prime Minister Tony Blair meets with Taoiseach Bertie Ahern in Ashford Castle, County Mayo on August 26, 1998. They join forces to fight terrorism and discuss laws which will be introduced in the aftermath of the Omagh bombing, which took place eleven day earlier on August 15 in Omagh, County Tyrone, 110 kilometres west of Belfast, and resulted in 28 deaths.

Leading the way in a return to the past is Ahern’s Dublin government, which has introduced the toughest anti-terrorist legislation in the history of the Irish Republic. He concedes that the measures are draconian but says that his government is determined to do everything in its power, “working closely with the British government to defeat and suppress this murderous conspiracy against the people of Ireland.”

Prime Minister Blair promises that he too plans to introduce extreme measures. “We will bring in similar measures to those proposed by the Irish government, so we will then have the toughest anti-terrorist measures for the whole of Ireland, the Republic and Northern Ireland, that we have ever seen.”

With no plans to recall the British parliament, it is thought that existing legislation will be applied, since it already includes measures similar to those announced by the Irish government.

Oppressive British legislation has sustained British rule in Ireland for decades. This includes internment without trial, non-jury courts, entry and search of homes without a warrant, seven-day detention with unrecorded and unsupervised interrogation, denial of access to lawyers, exclusion orders and more. Most of these are still in use in 1998.

The Ahern package includes withdrawal of a suspect’s right to silence — refusal to answer questions can be used as evidence that a suspect is a member of an illegal organisation, the seizure of property that has been used for storing weapons or making bombs, and the creation of a new offence of directing an unlawful organisation. This is expected to carry the penalty of life imprisonment.

Omagh is 75% nationalist, with good cross-community relations, and has largely escaped the worst of the conflict. Although Republican dissidents have carried out a spate of similar bombings in the previous year, the towns targeted are mainly Unionist and further east.

In the wake of the Good Friday Agreement, Republican splinter groups remain on a military footing. These groups — the Irish National Liberation Army (INLA), the Continuity IRA and the Real IRA — have announced their determination to fight on.

The group that claims responsibility for the Omagh bombing is the Real IRA, which was formed in protest at the IRA’s 1997 cease-fire. Irish police have insisted that the Real IRA is the military wing of the recently formed 32 County Sovereignty Movement (32CSM), although this is denied by that organisation.

Although both the INLA and the Real IRA have declared a unilateral cease-fire since the Omagh bombing, media focus has settled on Bernadette Sands McKevitt, sister of the 1980s IRA hunger striker Bobby Sands, who is a leading figure in the 32 County Sovereignty Movement. Sands-McKevitt has condemned the Omagh bombing, but her home in Blackrock, County Louth, has since been targeted by local townspeople who have staged protests against her and her family. She has also been denied a visa to enter the United States on a speaking tour.

The Omagh bombing could not have come at a better time for Britain. With the war formally over and Sinn Féin penned, the bombing delivers an opportunity to smash the Republican left once and for all and wrench it from any semblance of ongoing support in Ireland.

All nationalist opponents of the Good Friday Agreement must now cope with being stained by the blood of Omagh. With the massive referendum vote in favour of peace to back them up, the British and Irish governments can be satisfied that the Good Friday Agreement now looks more in place than at any other time. As one nationalist describes the situation, “If the Good Friday Agreement was a defeat for the cause of Irish nationalism, the Omagh bombing has turned it into a rout.”

(From: “Blair, Ahern make the most of Omagh bomb” by Dave Riley, Green Left (www.greenleft.org), August 26, 1998)


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Birth of Robert Lloyd Praeger, Writer & Librarian

Robert Lloyd Praeger, Irish naturalist, writer and librarian, is born on August 25, 1865 in Holywood, County Down, in what is now Northern Ireland.

From a Unitarian background, Praeger is raised in Holywood and attends the school of the Reverend McAlister and then the nearby Sullivan Upper School.

Praeger works in the National Library of Ireland in Dublin from 1893 to 1923. He co-founds and edits The Irish Naturalist, and writes papers on the flora and other aspects of the natural history of Ireland. He organises the Lambay Survey in 1905-06 and, from 1909 to 1915, the wider Clare Island Survey. He is an engineer by qualification, a librarian by profession and a naturalist by inclination.

Praeger is awarded the Veitch Memorial Medal of the Royal Horticultural Society (RHS) in 1921. He becomes the first President of both An Taisce and the Irish Mountaineering Club in 1948, and serves as President of the Royal Irish Academy (RIA) for 1931–34.

Praeger is instrumental in developing advanced methodologies in Irish botany by inviting Knud Jessen, the acclaimed Danish expert in Glacial and Post-Glacial flora, to undertake research and teaching in Ireland. This leads to the establishment of ‘paleoecology‘ as a distinct field of study in Ireland.

A vice-county system is adopted by Praeger dividing Ireland into forty vice-counties based on the counties. However, the boundaries between them does not always correspond to the administrative boundaries and there are doubts as to the correct interpretation of them.

Praeger dies on May 5, 1953 and is buried in Dean’s Grange Cemetery, Dublin, together with his wife Hedwig. His younger sister Rosamond Praeger is a sculptor and botanical artist.

(Pictured: Portrait of Robert Lloyd Praeger by Sarah Cecilia Harrison, National Museums Northern Ireland)


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Birth of John Purser, Mathematician & Professor

John Purser, Irish mathematician and professor at Queen’s College, Belfast, is born in Dublin on August 24, 1835.

Purser is the son of John Tertius Purser (1809–1893), the general manager of the well known A Guinness, Son & Co. brewery, and Anna Benigna Fridlezius (1803-1881). He is educated in a wealthy family, which includes artists, as his cousin Sarah Purser, or engineers, as his brother-in-law John Purser Griffith. He is the brother of mathematician Frederick Purser. He receives his early education at the private boarding school run by his uncle, Dr. Richard W. Biggs, at Devizes, Wiltshire. He completes his schooling at Devizes and begins his university studies at Trinity College, Dublin, graduating BA in mathematics in 1856. He is the best mathematician of his year at the University and in 1855 he gains the Lloyd Exhibition.

Purser becomes a tutor to the four sons of William Parsons, 3rd Earl of Rosse (1800-1867) in 1857. Lord Rosse’s 72-inch reflecting telescope, built in 1845 and colloquially known of as the “Leviathan of Parsonstown,” is the world’s largest telescope when it is built and continues to hold this distinction until the early 20th century. As well as acting as tutor to the children, Purser does become involved in Lord Rosse’s interest in astronomy but never does any observing.

In 1863, Purser is appointed professor of mathematics at Queen’s College, Belfast, a position he maintains until his retirement in 1901.

Purser is much better known as a teacher than as a researcher, and he has a good number of notable students, including Sir Joseph Larmor, theoretical physicist who serves as Lucasian Professor of Mathematics at the University of Cambridge; Charles Parsons, the inventor of the steam turbine; Sir John Henry MacFarland, who becomes Chancellor of the University of Melbourne; and William McFadden Orr.

Purser never marries. When his father dies on April 5, 1893, Rathmines Castle passes to him. He dies at Rathmines Castle on October 18, 1903, a very wealthy man. In his will he leaves £100,000 to his brother Frederick Purser, £40,000 to his sister Anna Griffith and £5,000 to each of her children. In addition to the money, he owns property in Blessington Street, Essex Street and Eustace Street which he leaves to his brother-in-law John Purser Griffith. Other properties and interests that he owns he divides between his brother Frederick and his sister Anna. After his death, his sister Anna and her husband John Purser Griffith move into Rathmines Castle although, at this time, its ownership has gone to Frederick Purser. After Frederick dies in August 1910, the Castle and his considerable wealth passes to Anna.

(Pictured: Portrait of John Purser painted by the artist Sarah Purser, daughter of Tertius Purser’s brother Benjamin Purser. The portrait hangs in Queen’s College, Belfast.)