The Battle of Brunanburh
http://en.wikipedia.org/wiki/Battle_of_Brunanburh

This battle in of 937, mentioned in the Anglo Saxon Chronicle is said to have occurred at Bromborough.
There is not 100% proof it did.

http://www.battlefieldstrust.com/res...ttleFieldId=59

The Vikings fought the English and the English won. The Wirral has some Old Nordic name in about the place. In the last survey on DNA about 1/2 of Wirral men had Viking DNA in them.



"Athelstan, having created a united kingdom of England by completing the re-conquest from the Danes, attempted to extend his authority over the northernmost territories of Britain. In response an alliance of British, Scots and Norse, under Olaf Guthfrithson, invaded England by ship via the Humber. In late 937 Athelstan responded, meeting the invaders in battle at Brunanburh. The joint Mercian and West Saxon army broke, pursued and destroyed the allied forces.
The site of the battle has not been established and a number of alternatives have been suggested."

Bromborough has been identified as one of the battle sites. The Wirral was a Viking settlement at one time for sure.