Nielsen Hayden genealogy
Family: Hildouin IV de Montdidier / Adele de Roucy (F1851)
m. 1031-
Father | Male
Hildouin IV de Montdidier
Born Abt 1005 Died 1063 Buried Married 1031 [1, 2] Father Hildouin III | F4737 Group Sheet Mother
Mother | Female
Adele de Roucy
Born Abt 1014 Roucy, Aisne, Picardy, France 
Died 1062 Buried Father Ebles I de Roucy | F4212 Group Sheet Mother Beatrix of Hainaut | F4212 Group Sheet
Child 2 | Female
+ Beatrix de Montdidier
Born Died Aft 1129 Buried Spouse Geoffrey II du Perche | F159 Married
Child 5 | Female
+ Ade de Montdidier
Born Died Aft 1095 Buried Liessies Abbey, Nord, France Spouse Godfrey de Guise | F13007 Married Spouse Walter van Ath | F14468 Married
Child 6 | Male
+ Ebles II
Born Abt 1033 Died Abt 1104 Buried Spouse Sibylle de Hauteville | F14883 Married Bef 1082
Child 7 | Female
+ Marguerite de Montdidier
Born Abt 1050 of Montdidier, Somme, Picardy, France Died Bef 1101 Buried Spouse Hugues | F5081 Married Abt 1080
Child 8 | Female
+ Felicia of Roucy
Born Abt 1050 Died Buried Spouse Sancho V Ramirez, King of Aragon; King of Navarre | F2347 Married 1076
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Sources - [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.
- [S49] Genealogics, by Leo Van de Pas.
- [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.