man William II of Fiennes‏‎, son of Ld. Enguerrand II of Fiennes and Isabel of Conde‏.
Born ‎± 1245 at Wendover, Buck, England., died ‎ Jul 11, 1302 at Coutrain, Flanders battle‎, approximately 57 years, cause of death: battle casualty
pg 131, "Ancestral Roots of Sixty Colonists etc" by Frederick Lewis Weiss, 6th Edition

Married/ Related to:

woman Blanche Brienne‏‎, daughter of Jean Brienne and Dame Jeanne of Chateaudun‏.
Born ‎± 1252 at Courtrain, Mayenne, France, died ‎ 1302‎, approximately 50 years
pg 131, "Ancestral Roots of Sixty Colonists etc" by Frederick Lewis Weiss, 6th Edition

pg 167, "The Plantagenet Ancestry" by W. H. Turton, published 1928

Child:

1.
woman Margaret Fiennes‏
Born ‎± 1270 at Picardy, Normandy, France, died ‎ Feb 7, 1333/1334‎, approximately 63 years
pg 76, "Ancestral Roots of Sixty Colonists etc" by Frederick Lewis Weiss, 6th Edition

pg 384, " A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire" by Sir Bernard Burke, published 1883