Eadburh.

About Eadburh

Eadburh, also spelled Eadburg, 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 killed her husband by poison while attempting to poison another. 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 an English exile. As a result, she was eventually expelled from the monastery and ended her days begging in the streets of Pavia.