1623 in Ireland

Incumbent

• Monarch: James I

  Events

• January 21 – Viscount Falkland, England's Lord Deputy of Ireland, issues a proclamation ordering all Roman Catholic priests to leave Ireland.
• June 20 – order issued requiring civic officials to take the Oath of Supremacy and enforcing excommunication against those who have relapsed.
• June 29 – Malcolm Hamilton is consecrated Church of Ireland Archbishop of Cashel.

  Honours

• February 4 – the Talbot Baronetcy, of Carton in the County of Kildare, is created in the Baronetage of Ireland for the lawyer and politician William Talbot, 1st Baronet|William Talbot].
• February 21 – the Barnewall Baronetcy, of Crickstown Castle in the County of Meath, is created in the Baronetage of Ireland for Patrick Barnewall.
• May 2 – the Stewart Baronetcy, of Ramelton in the County of Donegal, is created in the Baronetage of Ireland for the soldier William Stewart.
• December 30 – the Newcomen Baronetcy, of Kenagh in the County of Longford, is created in the Baronetage of Ireland for Robert Newcomen.
• The Dungan Baronetcy, of Castletown in the County of Kildare, is created in the Baronetage of Ireland for Walter Dungan.
• The title of Viscount Magennis of Iveagh is created for the chief of the clan Magennis.

  Births

• Sir [George Downing, 1st Baronet], soldier, statesman and diplomat
• Approximate date
• *James Lynch
• *Hugh Montgomery, 1st Earl of Mount Alexander, soldier

  Deaths

• Henry Piers, landowner and politician