Because his father, Robert I, Duke of Normandy, was not married to Herleva his mother.
William the Conqueror was the illegitimate son of Robert, 1st Duke of Normandy, and his mistress Herleva of Falaise.
When William the Conqueror was growing up he was called William the B*****d because his parents were not married. After the Battle of Hastings, he was called William the Conqueror because of his take over of England.
William the Bastard - he was illegitimate.
William the Conqueror was the illegitimate son of Robert, 1st Duke of Normandy, and his mistress Herleva of Falaise.http://wiki.answers.com/What_were_william_the_Conqueror's_parents_called#ixzz178vHukkR
The illegitimate son of the previous King of Normandy, Robert I, was William the Conqueror, also known as William I of England. He was born to Robert's mistress, Herleva, and became the Duke of Normandy before leading the Norman Conquest of England in 1066. William's lineage played a crucial role in shaping medieval European history.
William the Conqueror and his successors did not
I am not a direct descendant of William the Conqueror. William the Conqueror slept here!
William the Conqueror was crowned William I on Christmas day, 1066.
William the Conqueror was crowned in WestMinister Abby
There is no town called William the Conqueror.
William the Conqueror - was released on: USA: 2011
William the Conqueror was the Scandinavian King who took over England after Ethelred died. King Edward was not the successor to William the Conqueror.