Family: 2nd Earl of Okeham, Earl of Derby Robert de Ferrieres / Margaret Peverell (F5259853180)

1st Earl of Derby Robert de Ferrieres (1062-1139)

Countess Hawise de Vitre, of Derby (1069-1139)

 

 

Hawise De Ferrers

William Peverall (1080- )

Avice De Lancaster

 

 

2nd Earl of Okeham, Earl of Derby Robert de Ferrieres (1118-1160)

Margaret Peverell (1114- )

3rd Earl of Derby William Ferrers (1136-1190)