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William

William's father was King Henry II and his mother was Eleanor of Aquitaine. His paternal grandparents were Geoffrey of Anjou (Plantagenet) and Matilda of Normandy. He had four brothers named King Richard I (Coeur de Lion), King John (Lackand), Geoffrey and Henry.

Ancestor Pedigree Chart
- Geoffrey of Anjou (Plantagenet)
  
  King Henry II
  
  King Wiliam I (the Conqueror)
  
  King Henry I
  - b.1068 d.1135
  
  Baudouin V Count of Flanders ^*
  - b.1012 d.1067
  
  Matilda of Flanders
  - b.1031 d.1083
  
  Matilda of Normandy
  - b.1102 d.1169
  
  Duncan I (the Gacious) King of Scotland ^*
  - b.1001 d.1040
  
  Malcolm III Canmore King of Scots
  - b.1031 d.1093
  
  Aelflaed of Northumbria
  
  Matdila of Scotland
  - b.1079 d.1118
  
  Margaret Atheling (St. Margaret)
  - b.1045 d.1093
  
  William
  
  Eleanor of Aquitaine
  
  ^*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)