Cuilén was an early King of Alba. 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.
Detail of inscriptions upon Sueno's Stone which may represent Dub's demise. The visible arch could represent a bridge, and the framed head under the arch may represent Dub, whose body was traditionally said to have been hidden beneath a bridge.
The name of Cuilén's brother, Amlaíb mac Illuilb, as it appears on folio 15r of Oxford Bodleian Library MS Rawlinson B 488 (the Annals of Tigernach): "Amlaim mac Illuilb". Amlaíb seems to have held the kingship between 971–976, 977.
A hogback grave slab on display in Glasgow. Such monuments may be indicative of Scandinavian settlement in Perthshire and Fife. The aforesaid evidence of Scandinavian influence upon Cuilén's immediate family could indicate that his kindred was involved with such immigration.
Dub mac Maíl Coluim, called Dén and "the Black", was the king of Alba from 962. He was son of Malcolm I and succeeded to the throne when Indulf was killed.
Cuilén
…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 Indulf's death in 962. Cuilén soon after challenged him but was defeated in…
Painting of King Dub of Scotland labeled "DVFFVS", painted by George Jamesone, Made on unknown date in 1633