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Male Guillaume "L'Etendard" de Beynes Click to view Guillaume "L'Etendard" de Beynes in the family tree

Guillaume "L'Etendard" de was born about 1228.  Guillaume "L'Etendard" de's father was Guy Seigneur de Castre de Montfort-l'Amaury and his mother was Briande de Beynes.  His paternal grandparents were Simon III Le Chauve De Montfort and Maud de Beaumont. He had a brother named Robert de.  He was the younger of the two children. He had two half-brothers named Philippe I De and Philippe I de.  He died in 1271.


Guillaume "L'Etendard" de's first family with Mabille de Montmorency-Marly

‌Guillaume "L'Etendard" de and Mabille de were married in a religious ceremony in 1250.1   They had a son named Guglielmo Gran Connestabile Napoli.


Guillaume "L'Etendard" de's second family with Pétronille de MESNIL-RENARD

They had a daughter named Eustachia (Etienette) "Tassia".

1 Héraldique.&.Généalogie @ n 99 p 189
Further source/citation:
Héraldique.&.Généalogie @ n 81 p 89; n 85 p 314

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