| | WilliamIII Lord deBeauchamp …–1268 | | |
| | Walcheline deBeauchamp …–1235 | | |
| | Millicent deFerrers 1164–1252 Roger deMortimer 1158–1214 | | |
| | ThomasII deBerkeley …–1321 | | |
| | WilliamIII deFerrers Earl of Derby …–1253 Margaret deQuincy …–AD 1280/81 | | |
| | WilliamII deFerrers Earl of Derby 1162–… Agnes deMeschines 1174–1247 | | |
| | William deFerrers Earl of Derby 1130–1189 | | |
| | Robert deFerrers 1100–1160 | | | | William the Younger Peverel Lord of Nottingham 1080–1155 Avice deLancaster 1088–1112 | | | | William the Elder Peveral Lord of Nottingham …–1113 |
| | | Roger le Poitevin deMontgomery Earl of Arnudel 1048–1123 Almodis Contesse delaMarche 1062–1162 | | | | RogerII deMontgomery Earl of Arundel 1020–1094 Mabel Talvas d'Alcenon 1015–1079 | | | | | WilliamII Talvas Count of Alcenon 1000–1070 | | |
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| | | AlbericIII delaMarche 1030–… | | | | Bernard Conte delaMarche 974–1047 Amelia deMontignac 985–1072 |
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| | | Robert deFerriers Earl of Derby 1062–1139 | | | | Henry Sire deFerriers 1036–1088 | | | | Walkelin Seigneur deFerrieres …–… |
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| | | AndreI Seigneur deVitre 1054–1139 | | | | RobertI Signeur deVitre …–… | | | | Tristan Signeur deVitre …–1045 | | |
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| | | Robert Earl of Cornwall 1031–1090 Mathilde deMontgomery 1039–1085 | | | | Herluin Viscompte deConteville …–1066 Arletta of Falaise 1003–1050 | | |
| | | RogerII deMontgomery Earl of Arundel 1020–1094 Mabel Talvas d'Alcenon 1015–1079 | | |
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