The ancestors of William's father, Duke Robert I of Normandy, were Vikings or "Northmen"; hence the name they took on when they settled in France: Normans.
"He was great in body and strong, tall in stature but not ungainly."
The monk of Caen
Portrait: Reproduced by permission of the Library of Congress.
William's mother, Herleve (ur-LEV), was French, the daughter of a tanner. As their name implied, tanners were responsible for tanning cowhides, work which usually involved treating the leather with cow's urine. It was not a very pleasant background, but the fact that William was illegitimate (i. e., his parents were not married) was far more unpleasant in the eyes of his neighbors. It would be years before he gained full acceptance within the community.
Duke Robert and Herleve had another child, a girl named Adelaide, and later Robert arranged for Herleve to marry a powerful nobleman, with whom she had two sons, Odo and Robert. These two half-brothers of William would later play an important role in his career. Duke Robert went on to marry the sister of Canute, Danish king of England (ruled 1016-35), but the marriage did not produce any children. In 1035, he went on a pilgrimage to Jerusalem, and before leaving he convinced the nobles within the duchy (an area ruled by a duke) of Normandy to recognize William as his legitimate heir.
As it turned out, Duke Robert died on the return trip. William was only seven or eight at the time, and the next years were difficult ones as he attempted to maintain control over Normandy. Both men appointed to act as his guardians and advisors were killed, but by the age of fifteen William, recently knighted, had emerged as a powerful force in his own right.