1125 in Ireland

Incumbents

• High King: Toirdelbach Ua Conchobair

Events

• On 5 January 1125, the roof of the great stone church at Armagh was raised, having been without a complete roof for 130 years; the work was overseen by Ceallach, successor of Patrick.

Deaths

• Cineidigh Ua Conaing, archinneach of Cill-Dalua
• Mac Maeilesuthain, Chief Lector