William de Ferrers, Earl of Derby

Ferrers Side

• Ferrers, Robert de Earl of Derby Abt 1100 - Bef 1160  (~ 59 years)

• Ferrers, Robert de Abt 1062 - 1139  (~ 77 years)
• Vitre, Hawise de (Countess of Derb) Abt 1069 - Yes, date unknown

• Ferrers, Henry de (Sire de Chambrai) Abt 1036 - 1088  (~ 52 years)
• Roberts, Bertha Abt 1040 -
• Vitre, Andre Seigneur de Abt 1044 - Yes, date unknown
• Mortaigne, Agnes de Abt 1054 - Yes, date unknown

Peveril Side

• Peveril, Margaret Countess of Derby Abt 1114 - Yes, date unknown

• Peverel, William, The Younger (de Nottingham) Abt 1080 - Aft 1155  (~ 76 years)
• Lancaster, Avice de Abt 1088 - Aft 1149  (~ 62 years)

• Peverel, William, The Elder (de Nottingham) Abt 1054 -
• Peverel, Adeline Adeliza , Abt 1054 - 1120  (~ 66 years)
• Lancaster, Roger de Abt 1062 - Yes, date unknown
• Marche, Aumodis de La Abt 1064 - Yes, date unknown