Gascé was the son of Guillaume II de Poissy and Isabelle de Lévis. The date and place of his birth have not been found.
His wife was Jeanne de Cordo. They were married, but the date and place have not been found. They had no known children.
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Guillaume II de Poissy |
Robert II de Poissy |
Robert I de Poissy |
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Luce le Chambellan |
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Isabeau de Neufbourg |
Robert de Neufbourg |
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Isabeau Crespin |
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Isabelle de Lévis |
Simon de Lévis |
Philippe I Levieux dit de Lévis |
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Isabelle de Palaiseau |
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Petronille de Poivilliers |
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