Nielsen Hayden genealogy
Family: Robert de Ros / Isabel d'Aubeney (F3900)
m. Bef 17 May 1244-
Male
Robert de Ros
Birth of Helmsley, Yorkshire, England 
Death 17 May 1285 Burial Kirkham Priory, Yorkshire, England Marriage Bef 17 May 1244 [1, 2, 3] Father William I de Ros | F3385 Group Sheet Mother Lucy fitz Peter | F3385 Group Sheet
Female
Isabel d'Aubeney
Birth Abt 1233 Death 15 Jun 1301 Burial Newstead Priory, Lincolnshire, England Father William IV d'Aubeney | F148 Group Sheet Mother Isabel | F148 Group Sheet
Female
+ Mary de Ros
Birth Death Bef 23 May 1326 Burial Spouse William de Brewes | F10067 Marriage Bef 1272
Male
+ Robert de Roos
Birth of Wyville, Lincolnshire, England Death Bef 3 Feb 1311 Burial Spouse Erneburge | F12959 Marriage
Male
+ William III de Ros
Birth Abt 1255 of Helmsley, Yorkshire, England Death Between 12 May 1316 and 16 Aug 1316 Burial Kirkham Priory, Yorkshire, England Spouse Maud de Vaux | F5875 Marriage Bef 1284
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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.
- [S1016] Medieval English Ancestors of Robert Abell by Carl Boyer III. Santa Clarita, California, 2001.
- [S142] Royal Ancestry: A Study in Colonial and Medieval Families by Douglas Richardson. Salt Lake City, 2013.