Nielsen Hayden genealogy
Robert de Grey
- 1245-
Name Robert de Grey [1, 2, 3, 4] Gender Male Death Between 25 Sep 1240 and 12 Jun 1245 [5] 
Siblings2 siblings Person ID I11625 Ancestry of PNH, TNH, and others Last Modified 19 Apr 2018
Father (Unknown husband of Hawise de Grey) Mother Hawise de Grey Family ID F6713 Group Sheet | Family Chart
Family Amice Children 1. Walter de Grey, b. of Rotherfield, Oxfordshire, England 
d. 1267Family ID F6711 Group Sheet | Family Chart Last Modified 19 Apr 2018
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Notes - According to The Blackmans of Knight's Creek (citation details below), Robert de Grey "was granted Rotherfield by his brother Walter de Grey, archbishop of York."
More detail in this 2 Dec 2010 John Watson post to SGM:
In 1086 Rotherfield Greys was held by Anketil de Grey under William FitzOsbern (d. 1071). The mesne tenancy of Rotherfield Greys descended presumably through Anketil's son Richard to his grandson Robert, who held the manor in 1166 and who apparently died childless. Thereafter the manor passed to Robert's nephew John (d. by 1192), his brother Anketil's son. John's daughter and heir Eve married the royal judge Ralph Murdac, who was lord in 1192 but whose lands were forfeited in 1194 for rebellion. Rotherfield Greys was restored to Eve and her second husband, Andrew de Beauchamp, probably before 1200. Although not without heirs, before 1240 and possibly as early as 1215 Eve gave the manor to her kinsman Walter de Grey, archbishop of York, who settled it on his brother Robert de Grey.
[VCH Oxfordshire Texts in Progress (Rotherfield Greys) - Nov 06 - © University of London]
- According to The Blackmans of Knight's Creek (citation details below), Robert de Grey "was granted Rotherfield by his brother Walter de Grey, archbishop of York."
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Sources - [S977] The Blackmans of Knight's Creek: Ancestors and Descendants of George and Maria (Smith) Blackman by Henry James Young. Carlisle, Pennsylvania: 1980.
- [S981] G. Andrews Moriarty, "Genealogical Research in England." The New England Historical and Genealogical Register 76:278, October 1922.
- [S983] Rosie Bevan, 8 Dec 2003, post to soc.genealogy.medieval.
- [S984] John P. Ravilious, 1 Dec 2010, post to soc.genealogy.medieval.
- [S1526] The Ancestry of Dorothea Poyntz, Wife of Reverend John Owsley, Generations 1-15, Fourth Preliminary Edition, by Ronny O. Bodine and Bro. Thomas Spalding, Jr. 2013.
- [S977] The Blackmans of Knight's Creek: Ancestors and Descendants of George and Maria (Smith) Blackman by Henry James Young. Carlisle, Pennsylvania: 1980.