Directory of Royal Genealogical Data (http://www.dcs.hull.ac.uk)
Source: Baron of Alnwick 3rd. The Complete Peerage V.x,p462. Mary Plantagenet and Baron Henry De Percy III had the following children:
+1092 i.
Earl Henry Percy.982. Mary Plantagenet was born in 1320 in Tutbury Castle, Tutbury, Staffordshire, England. She died on 1 Sep 1362.
She was married to Baron Henry De Percy III (son of
Baron Henry de Percy II and Idonea de Clifford) in Sep
1334 in Tutbury Castle, Tutbury, Staffordshire, England.
Baron Henry De Percy III was born about 1320 in Castle Alnwick, Northumberland,
England. He was buried in 1368 in England. He died on 17 Jun 1368 in Castle
Alnwick, Northumberland, England. He was the 3rd Baron of Alnwick.
Directory of Royal Genealogical Data (http://www.dcs.hull.ac.uk)
Source: Baron of Alnwick 3rd. The Complete Peerage V.x,p462. Mary Plantagenet
and Baron Henry De Percy III had the following children:
+1092 i.
Earl Henry Percy.
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