title: 1780 in Ireland
text: # 1780 in Ireland
  
  Events from the year 1780 in Ireland.
  
  ## Incumbent
  
  * Monarch: George III
  
  ## Events
  
  * August – passenger boat service begins on Grand Canal between Dublin and Sallins.
  * Sacramental Test abolished.
  * Henry Grattan demands parliamentary independence.
  * Lady Berry, sentenced to death for the murder of her son, is released when she agrees to become an executioner (retires 1810).
  * The model cotton manufacturing town of Prosperous, County Kildare, developed by Robert Brooke (East India Company officer), begins to function.
  * The whiskey company John Jameson is established.
  
  ## Births
  
  * January – William Henry Fitton, geologist (died 1861).
  * 12 March – David Barry, military surgeon and physiologist (died 1835).
  * 20 March – Myles Byrne, a leader of the Irish Rebellion of 1798 and soldier in the service of France (died 1862).
  * 13 April – Alexander Mitchell, engineer and inventor of the screw-pile lighthouse (died 1868).
  * May – Amhlaoibh Ó Súilleabháin, author, teacher, draper and politician (died 1838).
  * 17 August – George Croly, poet, novelist, historian and divine (died 1860).
  * 1 December – Edward Bowen, lawyer and politician in Lower Canada (died 1866).
  * 20 December – John Wilson Croker, statesman and author (died 1857).
  
  ### Full date unknown
  
  *   * Michael John Brenan, priest and ecclesiastical historian (died 1847).
  *   * Thady Connellan, schoolteacher and writer (died 1854).
  *   * Anne Devlin, republican and housekeeper to Robert Emmet (died 1851).
  
  ## Deaths
  
  * 2 February – Thomas Waite, civil servant (born 1718).
  * 3 June – Henry Denny Denson, soldier and politician in Nova Scotia (born c.1715).
  * 25 August – William Bowles, naturalist (born 1705).
  * October (drowned at sea) – Robert Boyle-Walsingham, British Royal Navy officer and politician (born 1736).
  * 19 November – Jocelyn Deane, politician (born 1749).
  