Robert [Earl of Derby] Ferrers - Pedigree | FamilyCentral
 Abt 1200 - 24 Mar 1254
 Abt 1222 - Bef 12 Mar 1284
 Abt 1174 - 2 Nov 1247
 Abt 1124 - 29 Jul 1189
 Abt 1117/21 - 13 Mar 1181
Mary Brun or Brune or
 md. 26 Jul 1249
Family Group
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