John (de Grey) Marmion, Baron Marmion - Pedigree | FamilyCentral
 1343 - 25 Oct 1368
 Abt 1309 - Aft 20 Mar 1378
 1292 - 30 Apr 1335
 Abt 1313 - 20 Feb 1361
 1266 - Bef 7 May 1322
 1270 -
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