1804 in Ireland explained

Events from the year 1804 in Ireland.

Events

14 January – Richard Lovell Edgeworth's semaphore line between Dublin and Galway is operational, but is out of use by the end of the year.^[1]
11 February – the last armed rebel group of the Society of United Irishmen, led by James Corcoran, is betrayed and killed or captured by yeomen near Enniscorthy.^[2]
4 - 5 March – Castle Hill convict rebellion in New South Wales led by Irish convicts in Australia.^[3]
April – first boat passes through the Grand Canal throughout between the River Liffey in Dublin and the River Shannon.^[4]
14 May – Cork Street Fever Hospital, Dublin, opens in Cork Street, Dublin.
First Martello Tower erected in Ireland, at Sutton, Dublin.^[5]

Early February – James Bronterre O'Brien, Chartist leader, reformer and journalist (died 1864).
4 April – Andrew Nicholl, painter (died 1886).
7 April – James Emerson Tennent, politician and traveller (died 1869).
18 November – John George, politician, judge and in 1859 Solicitor-General for Ireland (died 1871).
25 December – Frederic Trench, 2nd Baron Ashtown, peer (died 1880).
26 December – Sir Joseph Napier, 1st Baronet, Conservative Party MP and Lord Chancellor of Ireland (died 1882).
31 December – Francis Sylvester Mahony, humorist and poet (a.k.a. Father Prout) (died 1866).

Adrian James. Kirwan. R. L. Edgeworth and optical telegraphy in Ireland, c.1790–1805. Proceedings of the Royal Irish Academy. Dublin. 117C. 2017. 209–35.
Book: O'Donnell, Ruan. Aftermath: Post-Rebellion Insurgency in Wicklow, 1799–1803. 2000. 0-7165-2638-7.
Web site: Castle Hill convict rebellion 1804. Anne-Maree. Whitaker. Dictionary of Sydney. 2013-03-03.
Book: Delany, Ruth. A celebration of 250 years of Ireland's Inland Waterways. Belfast. Appletree Press. 1988. 0-86281-200-3. 87.
Web site: History. https://web.archive.org/web/20100210013758/http://www.martellotowersutton.com/Tower_History-Origins.html. dead. February 10, 2010. Martello Tower Sutton. 2012-04-25.