William de [Sir Knight] Ferrers - Pedigree | FamilyCentral
 Abt 1412/13 - 9 Jun 1450
 1387 - 17 Dec 1435
 1389 - 4 Nov 1439/40
 Abt 1365 - 3 Nov 1415
 10 Aug 1331 - 2 Apr 1367/68
 Abt 1304 - 7 Aug 1374
 9 Sep 1224/99 - 31 Aug 1372
 Abt 1318 - 7 Sep 1347
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