Henry PERCY 1st Earl of Northumberland(10 Nov 1341 - 20 Feb 1408)Edmund MORTIMER Earl of March 3d(1 Feb 1351/1352 - 27 Dec 1381)
Margaret NEVILLE(12 Feb 1341 - 12 May 1372)Philippa of_Ulster PLANTAGENET Countess(16 Aug 1355 - 1 Jul 1378/1379)
m. bef 10 Dec 1379
b. 20 May 1364
d. 21 Jul 1403, Battle of Shrewsbury
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b. 12 Feb 1370/1371, Usk, Monmouthshire, England
d. 20 Apr 1417
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Spouses: 1, 2
Children
> Henry PERCY 2nd Earl of Northumberland(3 Feb 1392/1393 - 22 May 1455)
Elizabeth PERCY