William Ferrers - Pedigree | FamilyCentral
 Abt 1372 - 18 May 1445
 16 Feb 1355/56 - 1388
 Abt 1358 - 30 May 1394
 28 Feb 1332/33 - 8 Jan 1370/71
 Abt 1330 -
 1303 - 15 Sep 1343
 21 Mar 1316/17 - 1349
 Abt 1281 - 27 Jul 1316
 16 Sep 1295 - 4 Nov 1360