Halfdan I

(c. 807—877) king of the Danes

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Brother of Ivar ‘the Boneless’, took control of Deira in 867, killing both Northumbrian kings, and putting in Ecgberht I as puppet ruler of Bernicia, north of the Tyne. The following year was spent campaigning against Mercia, 871 against Wessex. In 874 he drove out Burgred, king of the Mercians, and installed Ceolwulf II there. After 875 he settled his followers in Northumbria, founding the Danish kingdom of York. It has been suggested that his men were weary of fighting, and he seems to have been ill-supported when he moved to Ireland in 877, seeking to recover his brother's kingdom of Dublin. He was reported killed at Strangford Lough.

Subjects: British History.

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