Battle of Brunanburh 937
The Battle of Brunanburh was an English victory in 937 by the army of Æthelstan, King of Wessex, and his brother Edmund over the combined armies of Amlaíb mac Gofrith (Olaf Guthfrithson), the Norse–Gael King of Dublin; Constantine II, King of Scots; and Owen, King of Strathclyde.
The result was a decisive victory for the Saxons of Wessex. Though relatively little known today, it was called "the greatest single battle in Anglo-Saxon history before the Battle of Hastings." Michael Livingston claimed that Brunanburh marks "the moment when Englishness came of age."
Recent archaeology appears to confirm that this battle took place in The Wirral, between the rivers Dee and Mersey, in north-west England. Mention of the battle is made in dozens of sources, in Old English, Latin, Irish, Welsh, Icelandic, and Middle English, and there are many later accounts or responses to the battle, including those by Alfred, Lord Tennyson and Jorge Luis Borges. A contemporary record of the battle is found in the Old English poem Battle of Brunanburh, preserved in the Anglo-Saxon Chronicle.