Joseph O’Sullivan, Irish Republican Army (IRA) volunteer, is born in London on January 25, 1897. Along with fellow IRA (London Battalion) volunteer Reginald Dunne, shoot dead Field Marshal Sir Henry Wilson outside Wilson’s home at 36 Eaton Place, Belgravia, London on June 22, 1922. Convicted by a jury, he is sentenced to death by Justice Montague Shearman. Despite a petition of 45,000 signatures, and a plea for clemency from many prominent figures at the time, including playwright George Bernard Shaw, O’Sullivan and Dunne are hanged for the murder on August 10, 1922, at Wandsworth Prison. The event provides the inspiration for the 1947 film Odd Man Out.

O’Sullivan’s father, John, is originally from Bantry, County Cork, and moves to London as a young man where he eventually becomes a successful tailor. His mother, Mary Ann O’Sullivan (née Murphy), is born in Inniscarra, County Cork. He is the youngest of thirteen children, all born in London, although only eleven survive to adulthood. As a boy he attends St. Edmund’s College, Ware. On January 25, 1915, his eighteenth birthday, he enlists into the Royal Munster Fusiliers, and later transfers to the London Regiment and serves with the rank of lance corporal during World War I, losing a leg at Ypres in 1917.

Upon being discharged from the army in 1918, O’Sullivan is employed by the Ministry of Munitions and, when the war ends, is transferred to the Ministry of Labour where he works as a messenger. The Ministry of Labour is located in Montagu House, adjacent to Scotland Yard, and later demolished and replaced by the present-day Ministry of Defence.

O’Sullivan becomes a member of the IRA detachment in London and is named by Rex Taylor as being responsible for the execution of Vincent Fovargue as a British spy at the Ashford Golf Links, Middlesex, on April 2, 1921. Fovargue is left with a label pinned to his body stating, “Let spies and traitors beware, IRA.” Fovargue had been an officer in the Dublin brigade of the IRA.

O’Sullivan’s brother, Patrick, is the first Vice-Commandant of the London IRA during its early days in 1919 but is seconded to the Cork No. 1 Brigade during the Irish War of Independence. Patrick also serves in the London Regiment during World War I, along with another brother, Aloysius, who is discharged from the army in 1916 suffering from shell shock. Patrick is also wounded in a gas attack during World War I. He fights with the Anti-Treaty IRA during the Irish Civil War and is wounded ten days after his brother is executed. Shortly before that, he crosses over to England to participate in an abortive attempt to rescue Dunne and his brother.

In 1923, John O’Sullivan tries to have the remains of his son and Dunne released for a funeral Mass. But it is not until after the abolition of capital punishment in the United Kingdom that Patrick O’Sullivan, with the assistance of the Irish Republican National Graves Association, is able to arrange for the bodies of O’Sullivan and Dunne to be sent to Ireland for burial. In mid-August 1929, Irish Republicans in London unveil a plaque commemorating Dunne and O’Sullivan. In 1967, after some political and diplomatic debate by the British and Irish governments, the British Government allows the bodies of Dunne and O’Sullivan to be exhumed. They are subsequently reburied in Dean’s Grange Cemetery, County Dublin.

(Pictured: Photograph of IRA member Joseph O’Sullivan taken before his 1922 execution)