William de Ferrers, Baron Ferrers - Pedigree | FamilyCentral
 30 Jan 1271/72 - 20 Mar 1324/25
 Abt 1240 - 20 Dec 1287
 Abt 1248 -
 Bef 1223 - 4 Aug 1265
 1241 - Bef 11 Apr 1281
 Abt 1197 - 23 Feb 1238
 Abt 1169 -
 Abt 1172 -
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