Sibyl de Montgomerie

Sibyl was born in 1058 in Montgomery, Wales.¹   Sibyl's mother was Mabel De Alencon-Belleme.  Her maternal grandparents were sn de Alençon-Bellême Talvas Guillaume II and Hildeburg de Beaumont. She had two brothers and a sister, named Robert de Bellême, Arnulf and Adeline.  She was the second youngest of the four children.  She died at the age of 49 in 1107.¹ 

‌Sibyl were married in a religious ceremony.¹