Encyclopædia Britannica: Isidore of Seville
- Biography of the encyclopaedist. In the 11th edition (1911).
- http://www.1911encyclopedia.org/Isidore_Of_Seville

Catholic Online: Saint Isidore of Seville
- Biographical portrait of this Doctor of the Church, by Terry Matz.
- http://www.catholic.org/saints/saint.php?saint_id=3877

The Ecole Glossary: Isidore of Seville
- Short essay on his life and works, by Karen Rae Keck.
- http://www2.evansville.edu/ecoleweb/glossary/isidore.html

Isidore of Seville, Saint
- Short biographical entry in the Columbia Encyclopedia.
- http://www.bartleby.com/65/is/IsidoreS.html

Vietnamese Eucharistic Youth Society: St. Isidore of Seville
- The story of his life. Suitable for children.
- http://www.tntt.org/vni/tlieu/saints/St0404.htm

St Isidore, Bishop of Seville
- From Alban Butler's Lives of the Saints.
- http://www.ewtn.com/library/MARY/ISIDSEV.htm

Catholic Encyclopedia: St. Isidore of Seville
- Biographical entry for this bishop, who died in 636.
- http://www.newadvent.org/cathen/08186a.htm

Domestic Church: Saint Isidore of Seville
- Three accounts: for children 0-8, 8-14, and age 14-adult. By Catherine Fournier.
- http://www.domestic-church.com/CONTENT.DCC/19980301/SAINTS/STISODORE.HTM

Bishop Saint Isidore, Doctor
- Fairly long biographical essay on Isidore of Seville.
- http://www.erols.com/saintpat/ss/0404.htm#isid

Patron Saints Index: Isidore of Seville
- Illustrated profile.
- http://www.catholic-forum.com/saints/sainti04.htm