Penda
From BiblePortal Wikipedia
Penda [1]
A Mercian king of the 7th century, who headed a reactionary movement of heathenism against the domination of Christianity in England, and for a time seemed to carry all before him, but Christianity, under the preaching of the monks, had gained too deep a hold, particularly in Northumbria, and he was overpowered in 665 in one final struggle and slain.