Family: 1st Earl of Northumberland Henry Percy / Margaret Neville (F9011)
m. 12 Jul 1358
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Male
1st Earl of Northumberland Henry Percy
Birth 10 Nov 1341 Alnwick, Northumberland, England 
Death 19 Feb 1408 Tadcaster, Yorkshire, England Burial 1408 Alnwick, Northumberland, England Marriage 12 Jul 1358 [1] Father 3rd Lord Percy Henry Percy | F9053 Group Sheet Mother Mary Plantagenet | F9053 Group Sheet
Female
Margaret Neville
Birth 12 Feb 1341 Durham, England Death 12 May 1372 Alnwick, Northumberland, England Burial 1372 Alnwick, Northumberland, England Other Spouse 3rd Lord de Ros of Helmsley William de Ros | F9052 Marriage 8 May 1341 Father 2nd Lord Neville Ralph Neville | F8993 Group Sheet Mother Alice d'Audley | F8993 Group Sheet
Male
+ Henry Percy
Birth 20 May 1364 Alnwick, Northumberland, England Death 21 Jul 1403 Shrewsbury, Shropshire, England Burial York, Yorkshire, England Spouse Elizabeth Mortimer | F3338 Marriage 1403
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Sources - [S323] thePeerage.com, (Name: thePeerage.com;), Neville Margaret #106913 http://thepeerage.com/p10692.htm#i106913.
- [S323] thePeerage.com, (Name: thePeerage.com;), Neville Margaret #106913 http://thepeerage.com/p10692.htm#i106913.