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Male Guillaume III de Bertrand Click to view Guillaume III de Bertrand in the family tree

Guillaume III de was born in 0984.  Guillaume III de's father was Guillaume II de Bertrand and his mother was Adelaide, (Blanca) de Anjou [Cts/Toulouse].  His paternal grandparents were Boso II Provence and Constance of Provence; his maternal grandparents were Foulques II "le Bon" Count of Anjou and Gerberge de Maine. He had three half-brothers and nine half-sisters, named William (Guillaume) II Count of, Bertrand II, William III Taillefer, Constance De, Philippa, Alice, Philippe De, Adelaide De, Toda, Gerberga Of, Odile De and Constance.  He died at the age of 34 in 1018.


Guillaume III de's family with Gerberge de Lombardy

They had a son named Geoffry I.

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