Guillaume III Count

Guillaume III was born about 1280 in Hainault, , France.  Guillaume III's father was Jan II Count of Holland and his mother is Philippe DE LUXEMBURG.  His paternal grandparents are Jean D'AVESNES and Alida Cnts of Hainault; his maternal grandparents are Henry I DE LUXEMBURG and Marquerite DE BAR.  He was an only child.  He died on June 7th, 1337.

‌Guillaume III and Jeanne were married in a religious ceremony on May 29th, 1305.  They had a daughter named Phillipia.