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Female Isabelle De Mercoeur Click to view Isabelle De Mercoeur in the family tree

Isabelle was born about 1240.  Isabelle's father was Béraud VIII Le Grand De Mercoeur and her mother was Béatrix De Bourbon.  Her paternal grandparents were Béraud VII De Mercoeur and Alix De Bourgogne; her maternal grandparents were Archambaud VIII De Bourbon and Béatrix De Montluçon. She had three sisters named Béatrix, Marquise and Alix.  She was the second oldest of the four children.


Isabelle's family with Jean III De Pierrepont

They had a son named Jean IV.

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