Gregory VII: Brief biography of Pope St. Gregory VII, by Karen Rae Keck.
Gregory VII (Hildebrand): Lengthy biographical essay on this saint.
Gregory VII, Saint: Biographical article in the Columbia Encyclopedia, 6th ed. Includes brief bibliography.
Pope Gregory VII: Illustrated profile.
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.
Popes Through the Ages: St. Gregory VII: Account of his pontificate. From the book by Joseph Brusher, S.J.
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.