Eowils and Halfdan

Eowils and Halfdan (Healfdan) were joint Kings of Northumbria, in England.

Their reign began with the death of Æthelwold of Wessex, killed by Edward the Elder after Æthelwold's Revolt in 902. They ruled the Danish Kingdom for over 8 years before meeting the English King themselves at the Battle of Tettenhall. Both Eowils and Halfdan were left dead on the field as the Viking army was decisively defeated by allied English forces. In Æthelweard's Chronicon, Latin translation of the Anglo-Saxon Chronicle a third brother and co-king, Ingwær, is also killed at Tettenhall.

The co-Kings were succeeded by Ragnall ua Ímair.