Colla Uais (Colla da Chrioch), son of Eochaid Doimlén, son of Cairbre Lifechair, was, according to medieval Irish legend and historical tradition, a High King of Ireland. His given name was Cairell. He and his two brothers, Muiredach (Colla Fo Chrí) and Áed (Colla Menn), were known was the Three Collas.
Read more about Colla Uais: Overview, Derchairthinn, Family Tree