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Female Sibyl de Montgomery Click to view Sibyl de Montgomery in the family tree

Sibyl de was born about 1078 in , Marche, Poitou, France.1   Sibyl de's father was Roger "Poitevin" de Lancaster and her mother was Audmodis de Breteuil.  Her paternal grandparents were Roger V de Montgomery and Mabel d'Alençon; her maternal grandparents were Alberic III de la Marche and Poncia de Ponce. She had a brother and two sisters, named Arnulph "Cimbricus" de, Avice (Adelina) de and Ponce de.  She was the oldest of the four children.


Sibyl de's family with Robert Fitzhamon

‌Sibyl de and Robert were married in a religious ceremony about 1093 in <, , Normandie, France>.1   They had a daughter named Sibyl.

1 Joanna de MESCHINES.FTW
Further source/citation:
"Royal ancestors of some American families" @ #671

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