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Female Blanche De Brienne Click to view Blanche De Brienne in the family tree

Blanche was born in 1245 in Courtrain, Mayenne, France.1   Blanche's father was Jean II De Brienne and her mother was Marie De Coucy.  Her paternal grandparents were Jean De Brienne and Berenguela Princess of Leon And Castile; her maternal grandparents were Enguerrand De Coucy and Mary De Montmirel-En-Brie.  She was an only child.  She died at the age of 57 in 1302 in Loupland, Maine, France.1 


Blanche's family with William De Fiennes

‌Blanche and William were married in a religious ceremony in 1259 in Wigmore, Herefordshire, England.1   They had a daughter named Margaret.

1 Joanne's Tree.1 GED.GED
Further sources/citations:
daveanthes.FTW, Genealogical Research of Kirk Larson

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