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Male Guillaume III De Montmirail Click to view Guillaume III De Montmirail in the family tree

Guillaume III De was born about 1075 in France.  Guillaume III De's father was Guillaume II Sire De Montmirail and his mother was Eustace De Crepon.  His paternal grandparents were Guillaume I Gouet and Matilda De Alluyes.  He was an only child.


Guillaume III De's family with Eustacia De Normandy

They had a son named Guillaume IV Sire De.

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