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Male Guy IX de LAVAL Click to view Guy IX de LAVAL in the family tree

Guy IX's father was Guido Comte di CASERTA and his mother was Isabelle de BEAUMONT.  His paternal grandparents were Guy VII de MONTMORENCY LAVAL and Philippa de VITRE; his maternal grandparents were Guillermo Comte di CASERTA and Jeanne de ACQUIGNY.  He was an only child.


Guy IX's family with Beatrix de GAVRE

They had a son named Guy X.

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