1152 in Ireland

Incumbents

• High King: Toirdelbach Ua Conchobair

Events

• Synod of Kells-Mellifont results in a national church organisation with four metropolitans and 36 sees, under the primacy of Armagh.
• The Archdiocese of Dublin,, recognised as a metropolitan province in by the Synod of Kells.
• Diarmaid mac Murchadha elopes with Devorgill.
• Cloyne was recognised as a diocese at the Synod of Kells