Æthelstan
Aftermath

After Æthelstan's death, the men of York immediately chose the Viking king of Dublin, Olaf Guthfrithson, as their king, and Anglo-Saxon control of the north, seemingly made safe by the victory of Brunanburh, collapsed. The reigns of Æthelstan's half-brothers Edmund (939–946) and Eadred (946–955) were largely devoted to regaining control. Olaf seized the east midlands, leading to the establishment of a frontier at Watling Street. In 941 Olaf died, and Edmund took back control of the east midlands in 942 and York in 944. Following Edmund's death, York again returned to Viking control, and it was only when the Northumbrians finally drove out their Norwegian Viking king, Eric Bloodaxe, in 954 and submitted to Eadred that Anglo-Saxon control of the whole of England was finally restored.
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