Ralph de Somery 1188–1212 | | |
William Percival de Somery 1190–1222 | | |
| | Margaret de Somery 1229–1293 Lord Ralph IV de Basset 1213–1265 | | |
Ralph de Somery 1235–1253 | | |
| | Lord Roger de Somery 1197–1273 Nicole de Aubigny 1205–1240 | | |
| | Sir Ralph de Somery 1166–1210 Margaret FitzGilbert 1163–1242 | | |
| | Sir John de Somery 1140–1192 | | |
| | | | | | Earl Robert de Ferrers 1070–1139 Hawise de Vitre 1088–1139 | | | | Sir Henry de Ferrers 1036–1088 Bertha FitzRobert de Aigle 1044–1095 | | | | Walchelinde Hilaire de Ferrers 1010–1089 Emma of Normandy 1010–1052 | | | | Henry de Ferrers 980–1015 |
| | | Duke Richard II of Normandy 963–1027 Judith Berenger de Bretagne 982–1017 Poppa de Envermeu 970–1028 | | |
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| | | Engenulphe FitzRobert 1008–1066 Richeride Richvaride 1010–1044 | | |
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| | | Andre Berenger de Vitre 1054–1139 Agnes de Mortaigne 1066–1120 | | | | Rivallon Berenger de Vitre 1013–… Genergan de la Vicaire 1017–… | | | | Martin Berenger de Vitre 962–… | | |
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| | | Count Robert de Mortaigne 1031–1095 Maud de Montgomery 1041–1084 | | | | Sir Herluin de Conteville 1001–1066 Herleva Arletta de Falaise 1003–1078 | | |
| | | Roger de Montgomery 1020–1094 Mabel Talvas of Belleme 1022–1079 | | |
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| | | Beatrice FitzWilliam 1074–… | | | | Lesceline de Avranches 1030–1080 |
| | | William FitzAnsculf 1044–… | | |
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