Nielsen Hayden genealogy
Family: Robert de Ros / Isabel of Scotland (F4623)
m. 1191
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Male
Robert de Ros
Birth Between 1170 and 1172 Helmsley, Yorkshire, England 
Death Bef 23 Dec 1226 Burial Temple Church, London, England 
Marriage 1191 [1, 2, 3, 4, 5] Haddington, East Lothian, Scotland [1, 2, 3, 4, 5] 
Father Everard de Ros | F4010 Group Sheet Mother Roese Trussebut | F4010 Group Sheet
Female
Isabel of Scotland
Birth Death Burial Father William I "The Lion", King of Scotland | F4738 Group Sheet Mother (Unknown) de Avenal | F4738 Group Sheet
Male
+ William I de Ros
Birth Aft 1192 of Helmsley, Yorkshire, England 
Death 1264 Burial Kirkham Priory, Yorkshire, England 
Spouse Lucy fitz Peter | F3385 Marriage Bef 24 Jan 1234
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Sources - [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.
- [S53] The Magna Charta Sureties, 1215: The Barons Named in the Magna Charta, 1215, and Some of Their Descendants Who Settled in America During the Early Colonial Years by Frederick Lewis Weis. Fifth edition, with additions and corrections by Walter Lee Sheppard, Jr. and William R. Beal. Baltimore: Genealogical Publishing Company, 1999.
- [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.
- [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.
- [S6758] Terry J. Booth, "The Sothill, Fauconberge, and Greystoke Ancestry of William1 Wentworth of New Hampshire." The American Genealogist 92:81, Jul/Oct 2021, published December 2022; 92:217, Jan/Apr 2022, published June 2023., year only.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.