William Percival of Dudley was born about 1120 in of Dudley. William Percival of Dudley's father is Robert de Somery. He had two brothers named Roger de and Stephen de. He is the oldest of the three children.
General Notes
!This source says he is the father of Roger de Somerei who marries Lady Joan le Strange. Roll of Battle Abbey and Ped. of Some of the Emperor Charlemagne's Descendants says John Somery is father of Roger de Somery. I'm guessing maybe this William is father of John/grandfather of Roger?? [Magna Charta Barons, p. 415]