Edwin was born about AD 584. He was a Prince Deira (part of Northumbria). When he was a boy, his father was killed by the Bernicians (who lived in the other part of Northumbria). The Bernician king made him live in exile (outside his country). When he grew up, his friend, King Redwald of East Anglia, helped him gather together a big army. They fought a big battle and took back Northumbria. Edwin became a Christian at his palace in Yeavering. His powerful armies took over British kingdoms, like Elmet and South Rheged. Later, two kings invaded Northumbria. They were King Cadwallon of Gwynedd (in Wales) & King Penda of Mercia. They killed Edwin in AD 633.