Male William of Normandy Click to view William of Normandy in the family tree Click to view William of Normandy in the family tree in SVG format

William's father was Richard (The Good) Normandy II and his mother was Judith of Brittany.  His paternal grandparents were Duke of Normandy Richard (San Peur, The Fearless) Normandy I and Gonnor de Crepon; his maternal grandparents were  Duke Conan (The Crooked) of Brittany I and  Ermengard of Anjou.  He was the fourth of six children.  He had two brothers and three sisters, named Richard, Robert (I, II the Devil, Magnificent), Fredesende, Eleanor and Helena.  He had a half-sister named Papia.