| | WilliamIV Earl deBeauchamp 1237–1298 | | |
| | John FitzGeoffrey 1213–1258 | | |
| | HughII deBigod …–AD 1224/25 | | |
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| | Hugh Bigod Earl of Norfolk 1095–1177 | | | | | | | | | Gilbert Lord deClare 1065–1114 Adeliza de Clermont 1058–… | | | | Richard Lord de Clare 1035–1090 | | | | Gilbert Count of Brionne 979–1040 | | |
| | | Walter Earl Giffard …–1102 | | |
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| | | Hugh Count deCreil 1030–1101 Margaret deMontdidier 1045–1110 | | | | Renaud deClermont 1010–1098 Ermengardes deClermont 1010–… | | |
| | | HilduinIV Count of Montdidier 1021–1063 | | |
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| | | | | | | | | | | | | | | Thurstan leGoz Lord Hiesmes 989–… Judith deMontanolier 1004–… | | |
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| | | Niel II de St. Sauveur 1016–1045 | | | | Roger de St. Sauveur 947–… | | |
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