Son of Rhodri Mawr, succeeded his father in Anglesey in 878. In 881 he won a victory over Aethelred II of Mercia on the river Conwy, but, under pressure from Viking raids, turned to Alfred of Wessex for help, acknowledging his overlordship. In 895 he was reported to have had English aid in ravaging Ceredigion, probably held by his brother, Cadell. He died in 916.
From The Kings and Queens of Britain in Oxford Reference.
Subjects: British History.