Mary Plantagenet, Baroness of Percy Lady - Pedigree | FamilyCentral
 16 Jan 1243/44 - 5 Jun 1296
 Abt 1250 - Bef 7 Jul 1283
 Abt 1255 - 30 May 1306
 1 Oct 1206 - 16 Nov 1272
 Abt 1223 - 24 Jun 1291
 Sep 1216 - 8 Jan 1248/49
 1218 - 1257
 Abt 1223 - 1274
 Abt 1241 - 5 Jun 1298
 Abt 1250 - 16 Apr 1301
 24 Dec 1166 - 19 Oct 1216
 Abt 1201 - Dec 1266
 3 Sep 1187 - 8 Nov 1226
 4 Mar 1187/88 - 27 Nov 1252
 1207 - 1 Feb 1247/48
 Abt 1183 - 1237
 Abt 1190 -
Family Group
Family Group
 Abt 1227 - 7 Jan 1267/68
  Children
    1.
Living
    2.
Living
3.
H ... Percy, 1st Earl of Nothumberland Sir