| | Mary Tailbois FitzRandolph 1244–1320 Sir Robert de Neville 1240–1271 | | |
Anastasia FitzRandolph 1247–1272 | | |
Joan FitzRandolph 1248–1310 | | |
| | Ralph FitzRandolph 1220–1270 Anastasia Percy 1216–1248 | | |
| | Ralph FitzRandolph 1180–1252 | | |
Sir Ralph le Bigod 1208–1260 | | |
| | Margery de Lacy 1226–1256 | | |
| | Countess Maud FitzJohn 1237–1301 Thomas de Furnival of the West Riding 1238–1291 | | |
Sir John FitzJohn 1240–1275 | | |
Richard FitzJohn 1244–1297 | | |
Aveline FitzJohn 1248–1274 | | |
| | Isabel le Bigod 1210–1252 Gilbert de Lacy 1200–1234 Sir John FitzGeoffrey 1208–1258 | | |
Isabella of Scotland 1195–1253 Isabella of Scotland 1195–1253 | | |
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William le Bigod 1188–1210 | | |
Thomas le Bigod 1190–1240 | | |
| | Lord Ralph de Basset 1253–1299 | | |
| | Lord Ralph IV de Basset 1213–1265 Margaret de Somery 1229–1293 | | |
| | Margaret le Bigod 1194–1237 Ralph III Basset 1189–1254 | | |
| | Sir Roger Bigod 1150–1221 Ida Isabel Plantagenet 1154–… | | |
| | Juliana de Vere 1116–1185 | | | | Roger Bigod of Earsham 1060–1107 | | | | Adeliza de Saint Saveur 1030–1060 | | | | Judith de Montanolier 995–1020 | | | | Ansfred II le Gros 963–1035 Ragnar Bjornsdottir 963–1002 | | |
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| | | Neil de Saint Saveur 1010–1063 | | | | Count Geoffrey de Eu 953–1015 Heloise Hawise de Guines 968–… | | |
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| | | Robert de Tosni 1030–1086 Adeliza de Savona 1042–1074 | | | | Robert de Tosni 1009–1088 | | |
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| | | Lord Aubrey II de Vere 1080–1141 | | | | Alberic de Vere 1030–1112 Beatrice de Gand 1040–1100 | | | | Alphonso de Vere 1000–1076 Katherine de Flanders 1006–1030 | | | | Manassus de Vere 972–1039 Petronilla Boulogne 976–1005 |
| | | Count Baldwin IV de Flanders 980–1035 Ogive V de Luxembourg 986–1036 Eleanora of Normandy 1011–1071 | | |
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| | | Henry Castellan de Gand 1005–1040 Sibilla Manasses 1010–1043 |
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| | | Gilbert FitzRichard de Clare 1065–1115 Adelaide de Clermont 1062–1117 | | | | Richard FitzGilbert de Clare 1035–1090 | | | | Gilbert de Brionne 1000–1040 | | |
| | | Agnes Ermentrude Fleitel 1014–1108 | | |
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| | | Hugh de Clermont 1030–1101 Marguerite de Montdidier de Roucy 1040–1110 | | | | Renaud I de Clermont 1005–1098 Ermengardis de Clermont 1010–… | | |
| | | Hildouin III de Rameru 1010–1063 Countess Adele de Roucy 1019–1062 | | |
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