14 April – Austin Stack was captured by National Army troops at the foot of the Knockmealdown Mountains.
30 April – Thousands turned up to greet Jim Larkin as he returned to Ireland after a nine-year absence in the United States.
May
28 May – The Government released two captured documents issued by the Irish Republican Army (IRA) on 24 May. The letters, signed by Éamon de Valera and Frank Aiken (the new Chief of Staff) called for the dumping of arms and the ending of armed struggle.[2] The Civil War was officially over.
31 May – The obelisk of 1736 commemorating the Battle of the Boyne (fought in 1690 at Oldbridge, County Meath) was blown up.[3]
July
20 July – Éamon de Valera appealed to the American Association for the Recognition of the Irish Republic for $100,000 to fight the forthcoming general election.
28 January – George Richardson, soldier, recipient of the Victoria Cross for gallantry in 1859 at Kewane Trans-Gogra, India (born 1831).
25 March – Thomas Crean, surgeon, rugby player and soldier, recipient of the Victoria Cross for gallantry in 1901 at Tygerkloof Spruit, South Africa (born 1873).
22 November – Andy O'Sullivan, agriculturalist and Irish Republican, died after 40 days on hunger strike in St. Bricin's Military Hospital, Dublin in 1923 Irish Hunger Strikes (born 1882).[8]
5 December – Edward Martyn, playwright and activist (born 1859).
^The church published a booklet entitled The Menace of the Irish Race to Our Scottish Nationality. Goring, Rosemary, ed. (2014). Scotland: the autobiography (New ed.). London: Penguin. pp. 308–11. ISBN978-0-241-96916-8.