John (de Grey) Marmion, (Baron Marmion) - Pedigree | FamilyCentral
 1343 - 25 Oct 1368
Family Group
 Abt 1309 - Aft 20 Mar 1378
 1292 - 30 Apr 1335
 Abt 1292 -
 Abt 1266 - Bef 7 May 1322
  Children