Edwin, also known as Eadwine or Æduinus, was the King of Deira and Bernicia – which later became known as Northumbria – from about 616 until his death. He converted to Christianity and was baptised in 627. After he fell at the Battle of Hatfield Chase, he was venerated as a saint.

Deira was an area of Post-Roman Britain, and a later Anglian kingdom.