The Battle of the Winwaed was fought on 15 November 655 between King Penda of Mercia and Oswiu of Bernicia, ending in the Mercians' defeat and Penda's death. According to Bede, the battle marked the effective demise of Anglo-Saxon paganism.
Stained glass window from the cloister of Worcester Cathedral showing the death of Penda of Mercia
Penda was a 7th-century king of Mercia, the Anglo-Saxon kingdom in what is today the Midlands. A pagan at a time when Christianity was taking hold in many of the Anglo-Saxon kingdoms, Penda took over the Severn Valley in 628 following the Battle of Cirencester before participating in the defeat of the powerful Northumbrian king Edwin at the Battle of Hatfield Chase in 633.
Stained glass window, depicting the death of Penda at the Battle of the Winwaed, Worcester Cathedral