Robert Ferrers, Earl of Derby - Pedigree | FamilyCentral
 Abt 1200 - 24 Mar 1254
 Abt 1218 - Bef 12 Mar 1284
 Abt 1162 - 22 Sep 1247
 Abt 1174 - 2 Nov 1247
 Abt 1174 - 25 Apr 1264
 Abt 1140 - Aft 31 Dec 1189
 Abt 1157 - Aft 5 Feb 1227/28
 Abt 1127 - Bef 29 Sep 1197
  Children
1.
John Ferrars