William De Mandeville 3rd Earl Of Sussex

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William De Mandeville 3rd Earl Of Sussex

William's father was Geoffrey De Mandeville 1st Earl Of Essex and his mother was Rohesia De Vere. His paternal grandparents were William Mandeville and Margaret De Rie; his maternal grandparents were Aubrey De Vere and Adeliza De Clare. He had two brothers and a sister, named Ernulf, Geoffrey and Alice. He had a half-sister named Beatrice.

Ancestor Pedigree Chart
- Geoffrey Mandeville
  - d.1046
  
  William Mandeville
  - d.1130
  
  Athelaise
  
  Geoffrey De Mandeville 1st Earl Of Essex
  - b.<  1091 d.Sep 1144 in Mildenhall, Suffolk, England
  
  Geoffrey De Rie
  
  Eudo De Rie
  
  Margaret De Rie
  
  William De Mandeville 3rd Earl Of Sussex
  
  Alphonso Of Ghesnes Count
  
  Alberic De Vere
  - d.1088
  
  Aubrey De Vere
  - d.1141
  
  Henry De Arques
  
  Beatrice De Arques
  
  Menasses De Guisnes
  
  Rose De Guisnes
  
  Rohesia De Vere
  - d.1266
  
  Gilbert D' Eu Count ^*
  - d.~  1040
  
  Richard De Clare
  - d.1090
  
  Gilbert De Clare
  - d.~  1116
  
  Walter Giffard ^*
  - b.<  1015 d.1085
  
  Rohesa Giffard
  
  Ermengarde De Flaitell ^*
  
  Adeliza De Clare
  - d.~  1163
  
  Renaud I De Clermont
  
  Hugues I De Clermont Count
  - d.~  1101
  
  De Clermont ^*
  
  Adeliza De Clermont
  
  Hildouin IV Of Montdidier Count ^*
  - d.1063
  
  Marguerite De Roucy
  
  Alice Roucy ^*
  
  ^*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)

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