Cairbre Lifechair

Cairbre Lifechair is presented in medieval Irish saga and chronicle tradition as the son of Cormac mac Airt who becomes High King after his father is blinded by Óengus Gaíbúaibthech of the Déisi; the blinding rendered Cormac ineligible under the legal norm that a king must be unblemished. Different sources place his accession and length of reign variably: Geoffrey Keating's Foras Feasa ar Éirinn dates his reign to 245–272, the Annals of the Four Masters to 267–284, and other traditions record regnal lengths of seventeen, twenty-six, or twenty-seven years. He features in narratives such as the Expulsion of the Déisi (background to his accession) and Cath Gabhra (where he raises forces against the fianna).

The supplied sources do not provide a sustained physical description of Cairbre Lifechair (no detailed measurements, hair, or clothing). He is attested and characterized through his deeds, titles, and territorial epithet: his name is glossed as 'lover of the Liffey,' linking him to the River Liffey and indicating a saga-era practice of associating rulers with landscape. Indirect markers of high status appear in his role as High King—exacting bórama (cow-tribute), leading coalitions of provincial forces, and arranging dynastic marriages—rather than in explicit descriptions of regalia or corporeal features.

Cairbre's "abilities" in the tradition are political, legal, and martial rather than supernatural. Narrative episodes attribute to him: the military defeat of Bresal Belach of Leinster at the Battle of Dubchomar leading to the regular exacting of the bórama (cow-tribute); raising a large army from Ulster, Connacht and Leinster against the fianna in Cath Gabhra because he perceives them as too powerful; arranging peace by betrothing his daughter Sgiam Sholais to a Déisi prince; and engaging in single combat in which he falls to Óscar, grandson of Fionn mac Cumhaill (with Óscar dying of his wounds shortly afterwards). Variant traditions record different details of the battles and aftermath, but consistently portray Cairbre as a human king exercising temporal authority rather than as a supernatural actor.