Nielsen Hayden genealogy
Family: Hamelin of Anjou / Isabel de Warenne (F4573)
m. Apr 1164-
Father | Male
Hamelin of Anjou
Born of Lewes, Sussex, England 
Died 7 May 1202 Buried Lewes Priory, Sussex, England 
Married Apr 1164 [1, 2, 3] Father Geoffrey V of Anjou | F4394 Group Sheet Mother (Unknown mistress of Geoffrey of Anjou) | F4394 Group Sheet
Mother | Female
Isabel de Warenne
Born Died Aft Apr 1203 Buried Lewes Priory, Sussex, England 
Father William III de Warenne | F2692 Group Sheet Mother Ela of Ponthieu | F2692 Group Sheet
Child 1 | Male
+ William de Warenne
Born of Lewes, Sussex, England 
Died 27 May 1240 London, England 
Buried Lewes Priory, Sussex, England 
Spouse Maud Marshal | F1816 Married Bef 13 Oct 1225
Child 2 | Female
+ Ela de Warenne
Born Died Bef 1240 Buried Spouse William fitz William | F10284 Married
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013., year only.
- [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008., "1163".
- [S1016] Medieval English Ancestors of Robert Abell by Carl Boyer III. Santa Clarita, California, 2001.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013., year only.