Hambledon Continuum. 2002. ISBN 978-1-85285-595-6. Crouch, David. The Beaumont Twins: The Roots and Branches of Power in the Twelfth Century. Cambridge
1120/1124 Helie of Semur 罗贝尔一世 (勃艮第) Duke of Burgundy 1011–1076 Ermengarde(英语:Ermengarde of Anjou, Duchess of Burgundy) of Anjou 约1018–1076 Philip Count