Nielsen Hayden genealogy
Family: John Fitz Alan / Isabel d'Aubigny (F1231)
m. Bef 1223-
Father | Male
John Fitz Alan
Born of Clun, Shropshire, England 
Died Bef 15 Mar 1240 Buried Married Bef 1223 [1] Father William Fitz Alan | F3426 Group Sheet Mother (Unknown) de Lacy | F3426 Group Sheet
Mother | Female
Isabel d'Aubigny
Born Died Bef 1240 Buried Father William d'Aubigny | F5212 Group Sheet Mother Mabel of Chester | F5212 Group Sheet
Child 1 | Male
+ John Fitz Alan
Born Abt 1223 of Clun, Shropshire, England 
Died Bef 10 Nov 1267 Buried Spouse Maud de Verdun | F5606 Married Bef 1240
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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.