Osburga of the Isle of Wight
 
      Rollo Thurstan Hrollagersson      
      Ansfrid I "le Danois" le Goz
c915
  Anslec de Bastembourg
cc9100
 
      Ansfred II le Goz
c965
  Thursdale de Bastembourg
c935
 
      Thurstan le Goz
c990
  Anceline de Montfort
c960
married
Turchetil of Turqueville
    Chamberlain to William I Duke of Normandy and King of England Robert
 'the Chamberlain' Bigod

c1030
married
Helen de
Saint-Saveur
   
    Earl of East Anglia Roger Bigod
c1060
married
Adelisa 'Alice'
de Toeni
   
  1st Earl of Norfolk
Hugh Bigod
c1095
   
    2nd Earl of Norfolk Roger Bigod
c1145
married
Ida de Toeni
   
3rd Earl of Norfolk Hugh Bigod
c1185
married
Matilda Marshal
      Isabel Bigod
1 Nov 1212
     
  married John FitzGeoffrey and Gilbert de Lacy
Aveline FitzJohn
c1235
Joan FitzJohn
c1245
Maud de Lacy
c1230
  married
Walter de Burgh
  married
Theobald Butler
  married
Geoffrey V
de Geneville