| | William de Friston 1165–1180 | | |
| | Bertram de Haget 1145–1171 | | |
| | Gundred d'Aubigny 1120–1150 Bertram de Haget 1110–1161 | | |
| | Gundred de Gournay 1097–1154 | | |
| | Adeliza Fitz Osulf du Plessis 1014– William d'Aubigny 1010–1066 | | | | Osulf du Plessis 974–1047 Matilda de Normandy –1017 | | | | Richard I “The Fearless” of Normandy 933–996 Gunnora Haraldsdottir de Crepon 935–1031 | | | | William I “Longsword” of Normandy 900–943 | | | | Robert “Rollo the Viking” of Normandy 870–932 Poppa “Little Doll” de Rennes 872–938 | | |
| | | Herbert I de Vermandois 845–905 | | |
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| | | Neil II de St Sauveur 966–1045 | | | | Roger de St Sauveur 940–989 |
| | | Geoffrey de Brienne 953–1015 Heloise de Guines 958–1002 | | | | Richard I “The Fearless” of Normandy 933–996 | | | | William I “Longsword” of Normandy 900–943 | | |
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| | | Siegfried “The Dane” de Guines 905–965 Elstrude of Flanders 932–964 | | | | Gottfried Eriksson of Haithabu 830–905 Gisela de Lorraine 843–907 | | |
| | | Arnulf I “The Great” of Flanders 886–965 Alix de Vermandois 910–960 | | |
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