Nielsen Hayden genealogy
Family: Robert of Meulan / Isabel de Vermandois (F1788)
m. 1096-
Father | Male
Robert of Meulan
Born Abt 1046 Beaumont-le-Roger, Eure, Normandy, France 
Died 5 Jun 1118 Buried Abbey St. Pierre, Preaux, Eure, Normandy, France Married 1096 [1, 2, 3] Father Roger "Barbatus" de Beaumont | F232 Group Sheet Mother Adeline de Meulan | F232 Group Sheet
Mother | Female
Isabel de Vermandois
Born Died Bef Jun 1147 Buried Other Spouse William II de Warenne | F4959 Married Aft 5 Jun 1118 Father Hugues le Grand | F2751 Group Sheet Mother Adèle de Vermandois | F2751 Group Sheet
Child 1 | Female
+ Isabel de Beaumont
Born Died Aft 1172 Buried Spouse Gilbert "Strongbow" fitz Gilbert | F5490 Married
Child 3 | Male
+ Waleran
Born 1104 Died 9 Apr 1166 Abbey St. Pierre, Preaux, Eure, Normandy, France Buried Abbey St. Pierre, Preaux, Eure, Normandy, France Spouse Agnes de Montfort | F4055 Married Abt 1141
Child 4 | Male
+ Robert of Meulan
Born 1104 Meulan, Ile-de-France, France Died 5 Apr 1168 Buried Leicester Abbey, Leicester, Leicestershire, England Spouse Amice de Gael | F4526 Married Aft Nov 1120
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [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.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.