Saint William may refer to: Saints Saint William of Gellone (755–812 or 814), second Count of Toulouse Saint William of Volpiano (962 - 1031), monastic reformer and architect Saint William Firmatus (1026 - 1103), hermit Saint William of Montevergine (d. 1142), abbot Saint William of Norwich (c.1132 – 1144) Saint William of York (d. 1154), Archbishop Saint William of Maleval or Saint William the Great (d. 1157), hermit Saint William of Perth, the patron saint of adopted children, killed by his adoptive son c. 1201 Saint William of Æbelholt (c. 1125 - 1203), also known as William of Paris or William of the Paraclete, French ecclesiastic active in Denmark Saint William of Donjeon (c.1155 – 1209), also known as William of Bourges, William the Confessor or William Berroyer, Archbishop of Bourges See also Saint-Guillaume (disambiguation) - French equivalent