His father was Aella, the first certain king of Deira. When Edwin was a very young man he was driven away from Deira by Ethelfrith, king of Northumbria, which at that time corresponded to the county ...

This is probably a fiction. Edwin and Morcar: Grandsons of Leofric, Earls of Mercia and Northumbria. Previously arch enemies of the Godwinsons, they seem to have made a deal with Harold in 1065 ...