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Female Isabelle d'Avesnes Click to view Isabelle d'Avesnes in the family tree

Isabelle was born about 1275 in <, Valenciennes, Nord, France>.1   Isabelle's father was Jean II d'Avesnes and her mother was Philippa Luxembourg.  Her paternal grandparents were Jean I d'Avesnes and Amice Burgundy; her maternal grandparents were Henri III (II) de Luxembourg-Maas and Marguerite de Bar-le-Duc. She had seven brothers and seven sisters, named Henri, Jean, Jean III, Willem III, Valeran de, Willem, Simon, Yolande, Alix, Marguerite, Jeanne, Marie, Aleid and Ida.  She was the fifth oldest of the fifteen children.  She died in December 1305.1 

1 Isabella D'AVESNES.FTW
Further sources/citations:
"Héraldique européenne", "Genealogical Research of Kirk Larson"

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