Sir William de Windsor1 
In 1194 he accompanied King Richard I in his expedition to Normandy where he relieved Verneuil.3
Child of Sir William de Windsor
- [S22] Sir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 591. Hereinafter cited as Burkes Extinct Peerage.
- [S1916] Tim Boyle, “re: Boyle Family,” e-mail message to BENR, 16 September 2006. Hereinafter cited as “re: Boyle Family.”
- [S37] BP2003 volume 3, page 3153. See link for full details for this source. Hereinafter cited as. [S37]
William Fitzwalter de Windsor1 
He was Warden of Forests in Berkshire.3 He was Castellan of Windsor.3 He had all grants made to his ancestors for the custody of Windsor Castle and lands confirmed by Empress Maud.3
Children of William Fitzwalter de Windsor and Gwladus verch Rhiwallon
- [S22] Sir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 590. Hereinafter cited as Burkes Extinct Peerage.
- [S1916] Tim Boyle, “re: Boyle Family,” e-mail message to BENR, 16 September 2006. Hereinafter cited as “re: Boyle Family.”
- [S37] BP2003 volume 3, page 3153. See link for full details for this source. Hereinafter cited as. [S37]
- [S22] Burke, Burkes Extinct Peerage, page 591.
Gwladus verch Rhiwallon1
Children of Gwladus verch Rhiwallon and William Fitzwalter de Windsor
Rhiwallon ap Cynfyn1

He fought in the Battle of Mechain in 1070.1
Child of Rhiwallon ap Cynfyn
Walter fitz Otho1 
He held the office of Castellan of Windsor.1 He held the office of Warden of all the Forests in Berkshire.1
Children of Walter fitz Otho
- [S22] Sir Bernard Burke, C.B. LL.D., A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire, new edition (1883; reprint, Baltimore, Maryland: Genealogical Publishing Company, 1978), page 590. Hereinafter cited as Burkes Extinct Peerage.
- [S1916] Tim Boyle, “re: Boyle Family,” e-mail message to BENR, 16 September 2006. Hereinafter cited as “re: Boyle Family.”
- [S37] BP2003 volume 3, page 3153. See link for full details for this source. Hereinafter cited as. [S37]
William Darrell1
Child of William Darrell and Elizabeth Calstone
Elizabeth Calstone1
Child of Elizabeth Calstone and William Darrell
John Sturton, Baron Sturton1
Child of John Sturton, Baron Sturton
John St. John1
Child of John St. John and Elizabeth Paullett
- Sir Oliver St. John+1 d. 1437