Nielsen Hayden genealogy
Family: William Fitzwilliam / Maud Cromwell (F10261)
m. Bef 1377-
Father | Male
William Fitzwilliam
Born of Sprotborough, Yorkshire, England 
Died 8 Apr 1398 Buried Married Bef 1377 [1] Father John Fitzwilliam | F10269 Group Sheet Mother Elizabeth de Clinton | F10269 Group Sheet
Mother | Female
Maud Cromwell
Born Died Aft 1414 Buried Father Ralph de Cromwell | F10267 Group Sheet Mother Maud de Bernake | F10267 Group Sheet
Child 1 | Male
+ John Fitzwilliam
Born 25 Jul 1377 of Sprotborough, Yorkshire, England 
Died 5 Jul 1417 Buried Spouse Eleanor Greene | F10255 Married Bef 1397
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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.