Gregory VII (Hildebrand) - Lengthy biographical essay on this saint. - http://www.saintpatrickdc.org/ss/0525.htm#greg
Gregory VII - Brief biography of Pope St. Gregory VII, by Karen Rae Keck. - http://www2.evansville.edu/ecoleweb/glossary/gregoryvii.html
Gregory VII, Saint - Biographical article in the Columbia Encyclopedia, 6th ed. Includes brief bibliography. - http://www.bartleby.com/65/gr/Gregory7.html
Vietnamese Eucharistic Youth Society: St. Gregory VII - Short biographies of SS. Bede the Venerable, Gregory VII, and Mary Magdalene de' Pazzi. Search for the word "Gregory". Suitable for children. - http://www.tntt.org/vni/tlieu/saints/St0525.htm
Popes Through the Ages: St. Gregory VII - Account of his pontificate. From the book by Joseph Brusher, S.J. - http://www.cfpeople.org/Books/Pope/POPEp155.htm
Pope St. Gregory VII - Also known as Hildebrand: "one of the greatest of the Roman pontiffs and one of the most remarkable men of all times." He died in 1085. Biographical article in the Catholic Encyclopedia. - http://www.newadvent.org/cathen/06791c.htm
Pope Gregory VII - Illustrated profile. - http://www.catholic-forum.com/saints/saintg09.htm