Nielsen Hayden genealogy
Family: Peter de Mauley / Margaret de Clifford (F13284)
m. Bef 16 Apr 1322-
Father | Male
Peter de Mauley
Born Abt 1300 of Mulgrave, Yorkshire, England 
Died 18 Jan 1355 Buried Married Bef 16 Apr 1322 [1] Father Peter de Mauley | F13285 Group Sheet Mother Eleanor de Furnival | F13285 Group Sheet
Mother | Female
Margaret de Clifford
Born Died 8 Aug 1382 Buried Father Robert de Clifford | F282 Group Sheet Mother Maud de Clare | F282 Group Sheet
Child 1 | Male
+ Peter de Mauley
Born Abt 1331 of Mulgrave, Yorkshire, England 
Died 19 Mar 1383 Buried Spouse Elizabeth de Meinill | F13283 Married Bef 18 Nov 1356
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.