1818 in Ireland

Events

• 6 January – opening of General Post Office.
• 22 April–26 May – Select Committee of the House of Commons inquires into fever in Ireland. Typhus epidemic continues.
• Mid-May – Paddle steamer Thames makes the first steamboat passage from the Clyde to Dublin.
• 30 May – Fever Hospitals Act.
• 13–14 June – Rob Roy makes the first steamboat passage from the Clyde to Belfast.
• Restoration of Down Cathedral completed.
• The Irish Society for Promoting the Education of the Native Irish through the Medium of Their Own Language is founded in Dublin by members of the Church of Ireland, the main movers being Henry Joseph Monck Mason and Bishop Robert Daly.
• Highwayman and rapparee Captain Gallagher surrenders to the authorities, is tried at Foxford and executed at Castlebar.

  Arts and literature

• Rev. Patrick Brontë's anonymous "modern tale" The Maid of Killarney is published in London.
• Sydney Owenson publishes her Florence Macarthy: an Irish tale.
• William Blacker writes the song "The Crimson Banner", commemorating the 1689 Siege of Derry.

  Births

• 28 January – Robert Carew, 2nd Baron Carew, politician.
• 4 March – Tobias Mullen, bishop of the Roman Catholic Diocese of Erie.
• 4 April – Thomas Mayne Reid, novelist.
• 25 April – Gustavus Vaughan Brooke, actor.
• April – Cecil Frances Humphreys Alexander, hymn-writer and poet.
• 24 May – J. H. Foley, sculptor.
• 19 June – Hugh Law, lawyer and politician.
• 21 June – Sir Richard Wallace, 1st Baronet, art collector and MP.
• 20 August – John Ball, politician, naturalist and Alpine traveller.
• 11 October – Martin Crane, first suffragan bishop of the Roman Catholic Diocese of Sandhurst in Australia.
• 12 October – John Cuffe, 3rd Earl of Desart, Conservative politician.
• 28 November – John Lane, Ontario politician.
• December – Thomas Roberts Ferguson, Ontario businessman and politician.
• ;Full date unknown
• :* Alexander Armstrong, naval surgeon, explorer and author.
• :* Catherine Hayes, opera diva.
• :* Thomas Kerr Lynch, explorer.
• :* Andrew George Malcolm, physician.

  Deaths

• 27 January – John Hamilton, 1st Marquess of Abercorn, politician.
• 29 January – Sackville Hamilton, politician.
• 31 January – Richard O'Reilly, Roman Catholic Archbishop of Armagh and Primate of All Ireland.
• 4 August – Tom Molineaux, bare-knuckle heavyweight boxer.
• 11 August – Sir Vere Hunt, politician.
• October – Joseph Atkinson, dramatist.
• 26 October – William Elliot, politician.
• 23 December – Sir Philip Francis, politician and pamphleteer.
• ;Full date unknown
• :* Riocard Bairéad, poet and United Irishman .
• :* Timothy Murphy, sniper in American Revolutionary War.