William de [Baron Ferrers] Ferrers - Pedigree | FamilyCentral
 28 Feb 1332/33 - 8 Jan 1370/71
 1303 - 15 Sep 1343
 21 Mar 1317 - 1349
 30 Jan 1271/72 - 20 Mar 1324/25
 1271/72 - Aft 9 Feb 1316/17
 Abt 1291 -
 Abt 1293 -