I am trying to locate information on Thomas Guillim, (1460-1540) born in Forest of Dean. He was married to Isobel Dean (1480-1534) His son was John Guillim and grandson was John Guillim also known as John the HERALD. The records I find on Thomas says that his father was Henry Willes 1487-1512 and mother Jane Wins. The question is, why was his fathers surname Willes and was there a connection to Duke of Guilaume of Normandie? Any information would be greatly appreciated.