Eadburh [SEP] father
Eadburh
Eadburh (), also spelled Eadburg, (fl. 787–802) was the daughter of King Offa of Mercia and Queen Cynethryth. She was the wife of King Beorhtric of Wessex, and according to Asser's "Life of Alfred the Great" she accidentally killed her husband by poison. She fled to Francia, where she is said to have been offered the chance of marrying Charlemagne, but ruined the opportunity. Instead she was appointed as the abbess of a convent. Here she is said to have fornicated with
this reading is disputed. Eadburh is mentioned by Asser, a 9th-century monk who wrote a biography of Alfred the Great: Asser says that Eadburh had "power throughout almost the entire kingdom", and that she "began to behave like a tyrant after the manner of her father". Whatever power she had in Wessex was no doubt connected with her father's overlordship.
If Offa did not gain the advantage in Wessex until defeating Cynewulf in 779, it may be that his successes south of the river were