Claim: Máel Caích, who appeares to have been joint king with Eochaid Buide in the 620s, is named as king of Dál Riata in 627 when he won a victory over Fiachnae mac Demmáin, king of the Ulaid at Ard Corann.
Evidence: He is named as king of Dál Riata in 627 when he won a victory over Fiachnae mac Demmáin, king of the Ulaid at Ard Corann.