| | Geoffrey I de Perche 1042–1100 Beatrice de Montdidier 1050–1129 | | |
Hugues III Capelle de Chateaudun 1056–1110 | | |
| | Adelise du Belleme 1014–1043 Count Rotrou du Perche 1014–1080 | | |
| | Warinus de Belleme 994–1026 Melisende de Chateaudun 991–1031 | | |
| | Maud de Montgomery 1041–1084 Count Robert de Mortaigne 1031–1095 | | |
Roger de Montgomery 1043–1054 | | |
Arnulph de Montgomery 1045–… | | |
Emma de Montgomery 1047–… | | |
Hugh de Montgomery 1049–1098 | | |
| | Robert II de Montgomery de Belleme 1052–1132 Countess Agnes de Ponthieu 1056–1103 | | |
Mabel de Montgomery 1055–… | | |
| | Roger de Montgomery 1058–1123 Countess Almodis de la Marche 1062–… | | |
| | Sibyl de Montgomery 1060–1107 Robert FitzHamon 1050–1107 | | |
Philip de Montgomery 1061–1099 | | |
| | Mabel Talvas of Belleme 1022–1079 Roger de Montgomery 1020–1094 | | |
| | | | |
| | Mathilde de Ganelon 983–1024 William I Talvas de Belleme 960–1028 | | |
