Eadburh of Bicester was an English nun, abbess, and saint from the 7th century. She has been called a "bit of a mystery"; there have been several Saxon saints with the same name, so it is difficult to pinpoint which one was Eadburh. It is said that Eadburh of Bicester was the daughter of King Penda of Mercia, who was pagan but had several children who were Christians, or King Frithewald. Eadburgh was born in the now-deserted village of Quarrendon in Buckinghamshire. Her sister was Edith, with whom she co-founded an abbey near Aylesburg;
Eadburh probably became abbess at Aylesburg. She was also aunt of Osgyth, whom she trained "in the religious life". There are legends that claim that Edburgh and Edith found Osyth after she had drowned three days earlier and "witnessed her return to life".
