Family: Henry de Percy, 1st Earl of Northumberland / Margaret de Neville (F4201)
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Father | Male
Henry de Percy, 1st Earl of Northumberland
Born 10 Nov 1341 Died 19 Feb 1408 Bramham Moor, Yorkshire 
Buried York Minster, York, North Yorkshire Married Father Henry de Percy, 3rd Baron Percy of Alnwick | F4202 Group Sheet Mother Mary of Lancaster | F4202 Group Sheet
Mother | Female
Margaret de Neville
Born Died May 1372 Buried Other Spouse William de Ros, 3rd Baron Ros of Helmsley | F7760 Married ca. 28 Aug 1339 Father Ralph Neville, 2nd Baron Neville | F4322 Group Sheet Mother Alice de Audley | F4322 Group Sheet
Child 1 | Male
+ Henry Percy, KG
Born 20 May 1364 Alnwick, Northumberland Died 21 Jul 1403 Shrewsbury, Shropshire, England Buried York Minster, York, North Yorkshire Spouse Elizabeth Mortimer, Baroness Camoys | F4198 Married Bef 10 Dec 1379