1786 in Ireland

Incumbent

• Monarch: George III

  Events

• 13 March – Construction begins in Dublin on the Four Courts Building, with the first stone laid by the British Viceroy for Ireland, the Duke of Rutland.
• The Parliament of Ireland passes An Act for Promoting the Trade of Dublin, by rendering its Port and Harbour more commodious, creating the Corporation for Preserving and Improving the Port of Dublin, predecessor of the Commissioners of Irish Lights.
• The last reliably recorded wolf in Ireland is hunted down and killed near Mount Leinster, County Carlow, for killing sheep.

  Births

• 1 April – William Mulready, painter.
• 7 May – John Cliffe Watts, military officer, architect in Australia.
• 23 September – John England, first Catholic Bishop of Charleston, [South Carolina].
• 12 November – John Burke, genealogist.
• Eaton Stannard Barrett, poet and author.

  Deaths

• June – Gorges Edmond Howard, lawyer and writer.
• October – John Handcock, soldier and politician.
• 2 December – James O'Fallon, Roman Catholic Bishop of Elphin.
• "Fighting" George Robert FitzGerald, eccentric.