Saint the Venerable Bede, Bede's Ecclesiastical History of England
“ Here Bede strangely omits important events. On Wilfrid's return to Northumbria he was accused of having procured his acquittal by bribery and was imprisoned for nine months, first at Bromnis (unidentified) and then at Dunbar. Being released at the request of Aebba, Abbess of Coldingham (v. IV, 19, 25) , who was Egfrid's aunt, he went first to Mercia and then to Wessex, but was expelled from both provinces. Egfrid's sister Osthryth was the wife of Ethelred of Mercia, and in Wessex the king, Centwine, had married a sister of the Northumbrian queen, Eormenburg. ”
