Nielsen Hayden genealogy
Family: Henry de Percy / Idoine de Clifford (F3344)
m. Abt 1318-
Father | Male
Henry de Percy
Born 1299 Died 26 Feb 1352 Warkworth, Northumberland, England 
Buried Alnwick, Northumberland, England 
Married Abt 1318 [1] Father Henry de Percy | F622 Group Sheet Mother Eleanor de Arundel | F622 Group Sheet
Mother | Female
Idoine de Clifford
Born of Appleby, Westmorland, England 
Died 24 Aug 1365 Buried Beverley Minster, Yorkshire, England 
Father Robert de Clifford | F282 Group Sheet Mother Maud de Clare | F282 Group Sheet
Child 1 | Female
+ Isabel Percy
Born Died Between 13 Sep 1349 and 25 May 1368 Buried Spouse William de Aton | F13231 Married Bef Jan 1327
Child 2 | Female
+ Eleanor de Percy
Born Died Bef 18 Oct 1361 Buried Dunmow Priory, Little Dunmow, Essex, England 
Spouse John Fitz Walter | F13784 Married
Child 3 | Male
+ Henry de Percy
Born Between 1322 and 1325 of Alnwick, Northumberland, England 
Died Abt 18 May 1368 Warkworth, Northumberland, England 
Buried Alnwick Abbey, Northumberland, England 
Spouse Mary of Lancaster | F11215 Married Bef 5 Sep 1334
Child 4 | Female
+ Maud Percy
Born Abt 1345 Alnwick, Northumberland, England 
Died Bef 18 Feb 1379 Buried Durham Cathedral, Durham, Durham, England 
Spouse John de Neville | F577 Married Bef 1362
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Sources - [S1018] John Watson, 10 Feb 2016, post to soc.genealogy.medieval.
- [S1018] John Watson, 10 Feb 2016, post to soc.genealogy.medieval.