1790 in Ireland

Events

• 15 March – The Sick and Indigent Roomkeepers' Society is established in Dublin; by the 21st century this will be the city's oldest surviving charity.
• Armagh Observatory, founded by Richard Robinson, 1st Baron Rokeby, Archbishop of Armagh, begins to function.

  Arts and literature

• Emo Court, near Emo, County Laois, is designed by James Gandon for John Dawson, 1st Earl of Portarlington.

  Births

• 1 January – George Petrie, painter, musician, antiquary and archaeologist.
• 15 April – Theobald Jones, British Royal Navy officer, lichenologist and Unionist politician.
• June – Arthur Jacob, ophthalmologist.
• 10 October – Father Theobald Mathew, temperance reformer.

  Deaths

• Patrick Browne, physician and botanist.