Banville is born to Agnes (née Doran) and Martin Banville, a garage clerk, in Wexford. He is the youngest of three siblings. He is educated at CBS Primary, Wexford, a Christian Brothers school, and at St. Peter’s College, Wexford. Despite having intentions of being a painter and an architect, he does not attend university. After school, he works as a clerk at Aer Lingus, which allows him to travel at deeply discounted rates. He takes advantage of these rates to travel to Greece and Italy. He begins working as a sub-editor at The Irish Press in 1969.
Banville publishes his first book, a collection of short stories titled Long Lankin, in 1970. His first novel, Nightspawn, appears in 1971, followed by his second, Birchwood, two years later. His The Revolutions Trilogy, published between 1976 and 1982, comprises works named after renowned scientists: Doctor Copernicus, Kepler and The Newton Letter. His next work, Mefisto, has a mathematical theme, and, in combination with the three books from The Revolutions Trilogy, is the fourth book from the “Scientific Tetralogy.” His 1989 novel, The Book of Evidence, begins The Frames Trilogy, dealing with the work of art. It is completed by Ghosts and Athena. His thirteenth novel, The Sea, wins the Booker Prize in 2005. In addition, he publishes crime novels as Benjamin Black, most of which feature the character of Quirke, an Irish pathologist based in 1950s Dublin. His alternative history novel, The Secret Guests (2020), is published under the name B. W. Black.
In 1969, Banville marries the American textile artist Janet Dunham, whom he met in San Francisco the previous year while she is a student at the University of California, Berkeley. The couple has two sons together. The marriage breaks down after Banville has an affair with a neighbour, Patricia Quinn, who subsequently becomes director of the Arts Council of Ireland. Banville has two daughters with Quinn, born around 1990 and 1997. Despite separating, Banville and Dunham never divorce and he describes them as remaining “on good terms.” Dunham dies at Blackrock Clinic on November 22, 2021, after which Banville states that he experienced “brain fog” due to grief and is unable to write for six months. In a 2024 interview, he expresses regret over his relationship history, saying, “I caused Janet such anguish. I have caused Patricia Quinn such anguish. I wasn’t good with my children. I was not a good parent. I am not a good person. I am selfish. But I have to have responsibility.”
In March 1917, Ryan passes his final medical examinations. That June he sets up medical practice in Wexford. In 1921, he moves to Dublin where he opens a doctor’s practice at Harcourt Street, specialising in skin diseases at the Skin and Cancer Hospital on Holles Street. He leaves medicine in 1925, after he purchases Kindlestown, a large farm near Delgany, County Wicklow. He lives there and it remains a working farm until his death.
In July 1919, Ryan marries Máirín Cregan, originally from County Kerry and a close friend of Sinéad de Valera throughout her life. Cregan, like her husband, also fought in the Easter Rising and is subsequently an author of children’s stories in Irish. They have three children together.
While studying at university in 1913, Ryan joins the Gaelic League at Clonmel. The company commander recruits the young Catholicnationalist, who becomes a founder-member of the Irish Volunteers and is sworn into the Irish Republican Brotherhood (IRB) the following year. In 1916, he goes first to Cork to deliver a message from Seán Mac Diarmada to Tomás Mac Curtain that the Easter Rising is due to happen on Easter Sunday, then to Cork again in a 12-hour journey in a car to deliver Eoin MacNeill‘s cancellation order, which attempts to stop the rising. When he arrives back on Tuesday, he serves as the medical officer in the General Post Office (GPO) and treats many wounds, including James Connolly‘s shattered ankle, a wound which gradually turns gangrenous. He is, along with Connolly, one of the last people to leave the GPO when the evacuation takes place. Following the surrender of the garrison, he is deported to HM Prison Stafford in England and subsequently Frongoch internment camp. He is released in August 1916.
Ryan rejoins the Volunteers immediately after his release from prison, and in June 1917, he is elected Commandant of the Wexford Battalion. His political career begins the following year when he is elected as a Sinn Féin candidate for the constituency of South Wexford in the 1918 United Kingdom general election in Ireland. Like his fellow Sinn Féin MPs, he refuses to attend the Westminster Parliament. Instead he attends the proceedings of the First Dáil on January 21, 1919. As the Irish War of Independence goes on, he becomes Brigade Commandant of South Wexford and is also elected to Wexford County Council, serving as chairman on one occasion. In September 1919, he is arrested by the British and interned on Spike Island and later Bere Island. In February 1921, he is imprisoned at Kilworth Internment Camp, County Cork. He is later moved on Ballykinlar Barracks in County Down and released in August 1921.
In 1926, Ryan is among the Sinn Féin TDs who follow leader Éamon de Valera out of the party to found Fianna Fáil. They enter the Dáil in 1927 and spend five years on the opposition benches.
In 1947, after spending fifteen years as Minister for Agriculture, Ryan is appointed to the newly created positions of Minister for Health and Minister for Social Welfare. Following Fianna Fáil’s return to power at the 1951 Irish general election, he returns as Minister for Health and Social Welfare. Following the 1954 Irish general election, Fianna Fáil loses power and he moves to the backbenches once again.
Following the 1957 Irish general election, Fianna Fáil are back in office and de Valera’s cabinet has a new look to it. In a clear message that there will be a change to economic policy, Ryan, a close ally of Seán Lemass, is appointed Minister for Finance, replacing the conservative Seán MacEntee. The first sign of a new economic approach comes in 1958, when Ryan brings the First Programme for Economic Development to the cabinet table. This plan, the brainchild of T. K. Whitaker, recognises that Ireland will have to move away from self-sufficiency toward free trade. It also proposes that foreign firms should be given grants and tax breaks to set up in Ireland.
When Lemass succeeds de Valera as Taoiseach in 1959, Ryan is re-appointed as Minister for Finance. Lemass wants to reward him for his loyalty by also naming him Tánaiste. However, the new leader feels obliged to appoint MacEntee, one of the party elders to the position. Ryan continues to implement the First Programme throughout the early 1960s, achieving a record growth rate of 4 percent by 1963. That year an even more ambitious Second Programme is introduced. However, it overreaches and has to be abandoned. In spite of this, the annual growth rate averages five percent, the highest achieved since independence.
Ryan does not stand in the 1965 Irish general election, after which he is nominated by the Taoiseach to Seanad Éireann, where he joins his son, Eoin Ryan Snr. At the 1969 dissolution he retires to his farm at Kindlestown, County Wicklow, where he dies at age 77 on September 25, 1970. He is buried at Redford Cemetery, Greystones, County Wicklow. His grandson, Eoin Ryan Jnr, serves in the Oireachtas from 1989 to 2007 and later in the European Parliament from 2004 to 2009.
Conway is remembered for his application of biquaternion algebra to the special theory of relativity. He publishes an article in 1911, and in 1912 asserts priority over Ludwik Silberstein, who also applies biquaternions to relativity. This claim is backed up by George Temple in his book 100 Years of Mathematics. In 1947 Conway puts quaternions to use with rotations in hyperbolic space. The next year he publishes quantum mechanics applications which are referred to in a PhD thesis by Joachim Lambek in 1950.
Conway continues his scholarship in the field of mathematics and theoretical physics and makes a special study of William Rowan Hamilton. With John Lighton Synge, he edits the first volume of Hamilton’s mathematical papers, and, with A. J. McConnell, he edits the second volume of Hamilton’s mathematical papers. Conway is also active in college life, being appointed Registrar, a position he occupies until his election as president in 1940. He retires in 1947 from the presidency of UCD. In 1953, some of his writings are edited by J. McConnell for publication by the Dublin Institute for Advanced Studies.