Nielsen Hayden genealogy
Family: Thomas Willoughby / Joan Arundel (F11605)
m. Aft 16 Sep 1428-
Father | Male
Thomas Willoughby
Born of Parham, Suffolk, England 
Died Bef 1 Jul 1439 Buried Married Aft 16 Sep 1428 [1] Father William Willoughby | F8480 Group Sheet Mother Lucy le Strange | F8480 Group Sheet
Mother | Female
Joan Arundel
Born Abt 1407 Died Bef 1 Jul 1439 Buried Father Richard Arundel | F11606 Group Sheet Mother Alice | F11606 Group Sheet
Child 1 | Male
+ Robert Willoughby
Born of Parham, Suffolk, England 
Died 30 May 1465 Buried Campsey Priory, Suffolk, England 
Spouse Cecily Welles | F11604 Married
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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.