Æthelberht

Æthelberht was King of Kent from about 589 until his death. The eighth-century monk Bede, in his Ecclesiastical History of the English People, lists him as the third king to hold imperium over other Anglo-Saxon kingdoms. In the late-ninth-century Anglo-Saxon Chronicle, he is referred to as a bretwalda, or "Britain-ruler". He was the first Anglo-Saxon king to convert to Christianity.