Cuilén was succeeded by Cináed mac Maíl Choluim, a fellow member of the Alpínid dynasty. One of Cináed's first acts as King of Alba was evidently an invasion of the Kingdom of Strathclyde.
After Cuilén's rule, Cináed mac Maíl Choluim became king of Alba. His first significant action upon ascending to the throne was a military expedition against the Kingdom of Strathclyde.