Eadburh of Bichester (also Eadburth, or Edburg, death c. 650) 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 most likely that Eadburh of Bichester was the daughter of King Penda of Mercia, who was pagan but had several children who were Christians. Eadburgh was born in Quarrendon. Her sister was Edith (or Eadith), 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".