A map of the area around the River Idle and Humber River in Nottinghamshire, England at the time of the battle between the East Angles under Raedwald and the Northumbrians under King Athelfirth around AD 616-617. This map shows the battle site, and the Kingdom of Elmet, the Forest of Elmet, and the rivers Hull, Derwent, Ouse, Aire, Don, and Trent. Athelfirth was killed in this battle, and his defeat resulted in the establishment of Edwin as king of Northumbria.