BURGRED, king of Mercia, succeeded to the throne in 852, and in 852 or 853 called upon ZEthelwulf of Wessex to aid him in subduing the North Welsh.
The request was granted and the campaign proved successful, the alliance being sealed by the marriage of Burgred to ZEthelswith, daughter of ZEthelwulf.
In 874 the march of the Danes from Lindsey to Repton drove Burgred from his kingdom.
In the year of his succession a large Danish force landed in East Anglia, and in the year 868 !Ethelred and his brother Alfred went to help Burgred, or Burhred, of Mercia, against this host, but the Mercians soon made peace with their foes.
In 853 AEthelwulf subdued the North Welsh, in answer to the appeal of Burgred of Mercia, and gave him his daughter AEthelswith in marriage.