William III De Montpellier

William III was born in 1008 in Montpellier, Normandy, France.  William III's father was William II De Montpellier and his mother was Beliarde.  His paternal grandfather was William I De Montpellier. He had a sister named Judith.  He was the younger of the two children.  He died at the age of 55 in 1063.

He had a biological son named William IV.