Aidan (d. 606), king of the Scottish kingdom of
Dalriada,
was the son of Gabran, king of Dalriada, and became king after
the death of his kinsman King Conall, when he was crowned at
Iona by
Saint Columba. He refused to allow his kingdom to remain in dependence on the Irish Dairiada, but coming into collision with his southern neighbours he led a large force against AEthelfrith, king of the
Northumbrians, and was defeatedat a place called Daegsanstane, probably in Liddesdale.
See History of Scotland
Initial text from 1911 encyclopedia -- Please update as needed