Cuilén

Cuilén was an early King of Alba (Scotland). He was a son of Illulb mac Custantín, King of Alba, after whom he is known by the patronymic mac Illuilb of Clann Áeda meic Cináeda, a branch of the Alpínid dynasty. During the 10th century, the Alpínids rotated the kingship of Alba between two main dynastic branches. Dub mac Maíl Choluim, a member of a rival branch of the kindred, seems to have succeeded after Illulb's death in 962. Cuilén soon after challenged him but was defeated in 965. Dub was eventually expelled and slain in 966/967. Whether Cuilén was responsible for his death is uncertain.