Isabelle was the daughter of Pierre de Roubaix and Margarethe van Gistel. The date and place of her birth have not been found.
Her husband was Jacques de Luxembourg-Saint-Pôl. They were married, but the date and place have not been found. They had no known children.
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Pierre de Roubaix |
Jean III (V) Antoine de Roubaix |
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Marie de Molembaix |
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Agnès de Lannoy |
Guillebert de Lannoy |
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Cathérine de Saint-Aubin |
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Margarethe van Gistel |
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Jean IV Vilain |
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Marguerite de Gâvre |
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