| b 1146, Of, Derby, Derbyshire, England | Walkelin De Ferrers | Henry De Ferrers, [Sire] | Mrs-Walkelin De Ferrers | |
| Robert De Ferrers | b 1036 | |||
| | b 1062 | Bertha Roberts | |||
| Robert De Ferrers, [Earl of Derby] | d 1139 | b 1040 | ||
| |b 1100 | | | Andre Seigneur De Vitre | ||
| |d 1160 | Hawise De Vitre, [Countess] | b 1054 | Robert De Mortaigne | > |
| | | b 1069 | Agnes De Mortaigne | Maude De Montgomery | > |
| Hugo Ferrers | b 1054 | Ranulph Peverell | ||
| | | William 'The_Elder' Peverel, [De Nottingham] | Ingelrica Maud | > | | | William, 'The_Younger' Peverel, [De Nottingham] | b 1040 |
| | | |b 1080 | Adeline Mrs Peverel | ||
| Margaret Peverel, [Countess] | d 1155 | b 1054 | ||
| b 1114 | | | Roger 'The_Poitevin' La_Marche, [Lord] | ||
| Avice De Lancaster | b 1058 | Mr La_Marche | ||
| b 1088 | Almodis Countess La_Marche | Mrs La_Marche | ||
| d 1149 | b 1062 | |||