William de [Baron Ros] Ros - Pedigree | FamilyCentral
 19 May 1329 - Bef 3 Dec 1352
 Abt 1285 - 3 Feb 1342/43
 Abt 1306 - Bef 22 Oct 1363
 1255 - Bef 16 Aug 1316
 Abt 1275 - 14 Apr 1322
 Abt 1286 - Abt 1333
 Abt 1244 - 1301
 Abt 1234 - 1310
 Abt 1248 - 29 Aug 1287
 Abt 1249 - Aft 1309
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