Edwin of Northumbria, born around five hundred eighty-six, was a significant figure in early medieval England, ruling as the King of Deira and Bernicia from approximately six hundred sixteen until his death in six hundred thirty-two or six hundred thirty-three. He was the second monarch to govern both kingdoms, which later unified to form Northumbria, and notably the first to embrace Christianity.
As the son of Ælle, the inaugural king of Deira, Edwin's early life was marked by turmoil. Following the conquest of Deira by Æthelfrith, he was forced into exile. His journey led him to the court of Rædwald of East Anglia, who played a pivotal role in defeating Æthelfrith in six hundred sixteen, thereby enabling Edwin to reclaim his thrones.
Edwin's reign was characterized by his rise to power, particularly after Rædwald's death around six hundred twenty-four, which positioned him as the most formidable ruler in Britain. The Venerable Bede recognized him among the kings who wielded imperium over other Anglo-Saxon leaders, and the Anglo-Saxon Chronicle honored him with the title of bretwalda, meaning 'ruler of Britain.'
In six hundred twenty-seven, under the influence of his wife, Æthelburh of Kent, and the Roman missionary Paulinus, Edwin converted to Christianity, marking a significant shift in the religious landscape of the region. His reign, however, came to a tragic end when he was defeated and killed at the Battle of Hatfield Chase in six hundred thirty-three by the forces of Cadwallon ap Cadfan and Penda of Mercia. Following his death, the kingdoms of Bernicia and Deira were once again divided under pagan rulers until they were reunited by Oswald, a descendant of Æthelfrith.