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Male John De Fiennes Click to view John De Fiennes in the family tree

John De was born about 1278 in Fiennes, Bolonois, France.  John De's father was William De Fiennes and his mother was Blanche De Brienne.  His paternal grandfather was Enguerran Ingelram De Fiennes and his paternal grandmother is Isabel Conde; his maternal grandparents were Jean De Brienne and Jeanne De Chateaudun. He had a sister named Margaret De.  He was the younger of the two children.  He died about 1324.


John De's family with Isabel De Dampierre

‌John De and Isabel De were married in a religious ceremony about 1300 in Nord, France.  They had a daughter named Jeanne De.

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