1827 in Ireland

Events

• 19-25 April – public theological debates in Dublin between Revs. R. T. P. Pope and Thomas Maguire.
• 6 September-October – Ordnance Survey staff survey a Lough Foyle baseline for their survey of Ireland.
• 24 September – Catherine McAuley opens an institution for destitute women and orphans and a school for the poor in Dublin.
• The British Army establishes Beggars Bush Barracks.
• Clonmel and Multyfarnham Friaries are re-established.
• Amhlaoibh Ó Súilleabháin begins his diary, later published as Cín Lae Amhlaoibh.

  Arts and literature

• Sydney, Lady Morgan, publishes her romantic novel with political overtones, The O'Briens and the O'Flahertys, in London.

  Births

• January – Bernard Diamond, soldier, recipient of the Victoria Cross for gallantry in 1857 at Bolandshahr, India.
• 5 February – Peter Lalor, leader of the Eureka Stockade rebellion in Australia.
• 27 April – Mary Ward, scientist.
• 5 May – Thomas Francis Hendricken, first Bishop of Providence, Rhode Island.
• 29 May – Timothy Daniel Sullivan, journalist, politician and poet, writer of the Irish national hymn God Save Ireland.
• 3 September – John Drew, actor in the United States.
• 10 December – Eugene O'Keefe, businessman and philanthropist in Canada.
• ;Full date unknown
• :*Thomas Farrell, sculptor.
• :*James Owens, soldier, recipient of the Victoria Cross for gallantry in 1854 at Sebastopol, in the Crimea.

  Deaths

• 14 November – Thomas Addis Emmet, lawyer and politician, member of United Irishmen.