gas attack during the First World War. He fought with the Anti-Treaty IRA during the Civil War and was wounded ten days after his brother was executed. Shortly before that, he had crossed over to England to participate in an abortive attempt to rescue Dunne and his brother. In 1923, John O'Sullivan tried to have the remains of his son and Dunne released for a funeral Mass. But it was not until after the abolition of capital punishment in the UK that Patrick O'Sullivan, with the assistance of the Irish Republican National Graves Association, was able to arrange for the bodies of Joseph O'Sullivan and Reginald Dunne to be sent to Ireland for burial. In mid August 1929 Irish Republicans in London unveiled a plaque commemorating Dunne and O'Sullivan. In 1967, after some political and diplomatic debate by the British and Irish governments, the British Government allowed the bodies of Dunne and O'Sullivan to be exhumed. They were subsequently reburied in Deans Grange Cemetery, County Dublin, Ireland. Notes 1897 births 1922 deaths 20th-century executions by England and Wales British Army personnel of World War I Burials at Deans Grange Cemetery Executed Irish people Executed assassins Irish Republican Army (1922–1969) members Irish amputees Irish nationalist assassins Irish people of World War I People educated at St Edmund's College, Ware Criminals from London People of the Irish War of Independence Royal Munster Fusiliers soldiers