Nielsen Hayden genealogy
Family: Waltheof / Judith of Lens (F2414)
m. Aft Jan 1070-
Father | Male
Waltheof
Born 1027 of Potton, Bedfordshire, England 
Died 31 May 1076 Winchester, Hampshire, England 
Buried Married Aft Jan 1070 [1, 2, 3] Father Siward | F6557 Group Sheet Mother Ælfled of Bernicia | F6557 Group Sheet
Mother | Female
Judith of Lens
Born Abt 1054 Died Aft 1086 Buried Father Lambert II of Boulogne | F2136 Group Sheet Mother Alice of Normandy | F2136 Group Sheet
Child 1 | Female
+ Alice of Northumberland
Born Died Aft 1126 Buried Spouse Ralph de Tony | F2355 Married 1103
Child 2 | Female
+ Maud of Northumberland
Born Abt 1072 Died 1130 Buried Scone, Perthshire, Scotland 
Spouse Simon I de Senlis | F6027 Married Bef 1091 Spouse David I, King of Scotland | F5533 Married Bef Jul 1113
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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., year only.
- [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., year only.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.