1648 in Ireland

Incumbent

• Monarch: Charles I

Events

• March – Murrough O'Brien, 1st Earl of Inchiquin changes sides and declares for the King.
• September – open breach between Owen Roe O'Neill and Confederate Council.
• September – Murrough O'Brien, 1st Earl of Inchiquin welcomes the Marquis of Ormond when he returns to Ireland.

Births

• Henry Colley, politician
• Edward Fitzharris, intriguer

Deaths

• Richard Martin fitz Oliver, lawyer, member of the Catholic Confederates of Ireland and Mayor of Galway