Piers de Warburton - Pedigree | FamilyCentral
 Aft 1427 - 1495
 Bef 1408 - Aft 1415
 Abt 1401 -
 Bef 1408 - Aft 1418
 Abt 1372 - Bef 1415
 Abt 1368 - Aft 1428
 Abt 1333 - Bef 1391
 Abt 1337 -
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