 Little is known of Æthelberht's life or reign, as very few East Anglian records have survived from this period. Mediaeval chroniclers have provided dubious accounts of his life, in the absence of any real details. According to Richard of Cirencester, writing in the fifteenth century, Æthelberht's parents were Æthelred I of East Anglia and Leofrana of Mercia. Richard narrates in detail a story of Æthelberht's piety, election as king and wise rule. Urged to marry against his will, he apparently agreed to wed Eadburh, the daughter of Offa of Mercia, and set out to visit her, despite his mother's forebodings and his experiences of terrifying events (an earthquake, a solar eclipse and a vision).
