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Female Constance la Gros, Princess of Brittany Click to view Constance la Gros, Princess of Brittany in the family tree Click to view Constance la Gros, Princess of Brittany in the family tree

Constance's father was Conan le Gros and her mother was Maud of Normandy.  Her paternal grandparents were Duke Conan I of Brittany and Ermengarde de Anjou; her maternal grandparents were King Henry Beauclerc I and Sybilla Corbet.  She was an only child.

Family Details of Constance's family with Alan la Zouche