From around 616, Rædwald was the most powerful of the English kings south of the River Humber. According to Bede he was the fourth ruler to hold imperium over other southern Anglo-Saxon kingdoms: he was referred to in the Anglo-Saxon Chronicle, written centuries after his death, as a bretwalda (an Old English term meaning 'Britain-ruler' or 'wide-ruler'). He was the first king of the East Angles to become a Christian, converting at Æthelberht's court some time before 605, whilst at the same time maintaining a pagan temple. In receiving the faith he helped to ensure the survival of Christianity in East Anglia during the apostasy of the Anglo-Saxon kingdoms of Essex and Kent. He is generally considered by historians to be the most favoured candidate for the occupant of the Sutton Hoo ship-bu