 He succeeded three East Anglian kings who ruled together after 749.There is no coinage known for Æthelred and the only historical sources that name him date from after the Norman conquest of England, including the "Lives of St Æthelberht" and the regnal lists of William of Malmesbury.In the legendary narratives of Saint Æthelberht, Æthelred and his queen, who was possibly named Leofruna, both dwelt at "Beodricesworth" (modern Bury St. Edmunds).