Nielsen Hayden genealogy
Family: William I, King of England / Matilda of Flanders, Queen Consort of England (F409)
m. Abt 1050-
Father | Male
William I, King of England
Born 1027-1028 Falais, Calvados, Normandy, France 
Died 9 Sep 1087 St. Gervais, near Rouen, Normandy, France Buried Married Abt 1050 [1, 2, 3] Father Robert I | F4919 Group Sheet Mother Herleve | F4919 Group Sheet
Mother | Female
Matilda of Flanders, Queen Consort of England
Born 1032 Died 2 Nov 1083 Buried Abbey of Sainte-Trinitie, Caen, Calvados, Normandy, France Father Baldwin V | F1739 Group Sheet Mother St. Adele of France | F1739 Group Sheet
Child 4 | Male
+ Robert Curthose
Born in or Aft 1050 Died Abt 3 Feb 1134 Cardiff, Glamorgan, Wales Buried Gloucester Abbey, Gloucester, Gloucestershire, England Spouse Sibyl of Conversano | F954 Married Sep 1100 Italy
Child 6 | Male
William II "Rufus", King of England
Born Abt 1060 Died 2 Aug 1100 The New Forest, England Buried Winchester Cathedral, Winchester, Hampshire, England
Child 7 | Female
Constance
Born 1061 Died 13 Aug 1090 Buried St. Melans, Rhedon, Brittany, France Spouse Alain Fergant | F1725 Married 1086
Child 8 | Female
+ Adela of Normandy
Born Abt 1061 Died 8 Mar 1137 Convnt of Marcigny-sur-Loire, France Buried Spouse Etienne Henri | F774 Married 1080 Chartres, Eure-et-Loir, Beauce, Centre, France
Child 9 | Male
+ Henry I, King of England
Born 1068 Died 1 Dec 1135 Lyon-la-Forêt, near Rouen, Normandy, France Buried Reading Abbey, Berkshire, England Spouse (Unknown mistress or mistresses of Henry I) | F334 Married Spouse Nest verch Rhys | F447 Married Spouse Sybil Corbet | F5022 Married Spouse Edith Forne | F10143 Married Spouse Matilda of Scotland, Queen Consort of England | F6341 Married 11 Nov 1100 Spouse Alice of Louvain, Queen Consort of England | F5677 Married 29 Jan 1121 Windsor, Berkshire, England
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Sources - [S142] Royal Ancestry, by Douglas Richardson. Kimball G. Everingham, ed. 2013.
- [S76] The Oxford Dictionary of National Biography (2004-ongoing)., "between October 1049 and 1051".
- [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., "m. 1053".
- [S142] Royal Ancestry, by Douglas Richardson. Kimball G. Everingham, ed. 2013.