Cairbre Lifechair ("lover of the Liffey"), son of Cormac mac Airt, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He came to the throne after the death of Eochaid Gonnat. During his time Bresal Belach was king of Leinster, and refused to pay the bórama or cow-tribute to the High King, but Cairbre defeated him in the Battle of Dubchomar, and from then on exacted the bórama without a battle.