Battle of The Winwaed - Aftermath

Aftermath

The battle had a substantial effect on the relative positions of Northumbria and Mercia. Mercia's position of dominance, established after the battle of Maserfield, was destroyed, and Northumbrian dominance was restored; Mercia itself was divided, with the northern part being taken by Oswiu outright and the southern part going to Penda's Christian son Peada, who had married into the Bernician royal line (although Peada survived only until his murder in 656). Northumbrian authority over Mercia was overthrown within a few years, however.

Significantly, the battle marked the effective demise of Anglo-Saxon paganism; Charles Plummer, in 1896, described it as "decisive as to the religious destiny of the English". Penda had continued in his traditional paganism despite the widespread conversions of Anglo-Saxon monarchs to Christianity, and a number of Christian kings had suffered death in defeat against him; after Penda's death, Mercia was converted, and all the kings who ruled thereafter (including Penda's sons Peada, Wulfhere and Æthelred) were Christian.