User:Greenshed/sandbox/Kings of Northumbria in the Norse era

The kings of Northumbria in the Norse era variously controlled Jórvík, the former Deira, from its capital York or the northern part of the kingdom, the former Bernicia, from Bamburgh. The southern kings were usually vikings while the northern rulers were Anglo-Saxons. Some of the rulers controlled all or most of Northumbria although there is some doubt over the details as he history of Northumbria in the ninth and tenth centuries is poorly recorded.