William Gylette's father was Jacques De Gylette born abt 1549 in Bergerac, Guyenne(Dordogne), France and died in Chaffcombe, Somersetshire, England. He married Jeanne Mestre who was born abt 1552 in French Church, Crispin, London. I have that they were married at the same place.
My source was LDS Genealogical Library, Salt Lake City, UT
They can be found at
www.familysearch.org