For All the Saints: Etheldreda
- Also called Aethelthryth, Ethelreda, Edilthride, Ediltrudis, or Edeltrude. Biographical essay.
- http://www.saintpatrickdc.org/ss/0623.htm#edel

Saint Ethelreda (Audrey)
- Brief biography.
- http://www.catholic.org/saints/saint.php?saint_id=6

Etheldreda (Audrey)
- Brief biography of the founder of a double monastery at Ely, and patron saint of Cambridge University.
- http://www2.evansville.edu/ecoleweb/glossary/etheldreda.html

St. Etheldreda
- Queen of Northumbria, twice married for reasons of state, d. 679. Biography in the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/05554b.htm

Patron Saints Index: Etheldreda
- Illustrated profile.
- http://www.catholic-forum.com/saints/sainte09.htm