Guillemette was the daughter of Érard de Montmorency-Breteuil and Jeanne de Longueval. The date and place of her birth have not been found.
Her husband was Amaury de Braque. They were married, but the date and place have not been found. Their two known children were Arnoul II (c1320-?) and Étienne (?-?).
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Érard de Montmorency-Breteuil |
Mathieu III de Montmorency |
Bouchard V de Montmorency |
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Isabelle de Laval |
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Jeanne de Brienne-Ramerupt |
Érard de Brienne |
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Philippa de Champagne |
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Jeanne de Longueval |
Aubert II de Longueval |
Guillaume de Longueval |
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Anne de Meulan |
Amaury II de Meulan |
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Marguerite de Beaumont-le-Roger |
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Note 1
The proposed royal connection for Catherine from the Braque to the Montmorency family, though not completely eliminated, is very suspicious and unlikely.