- Born: Abt 1212, Northumberland, England
- Marriage: Thomas Fitz William 141,1190
Information about this person:
• Background Information. 1190
Agnes, daughter of Roger Bertram, married Thomas Fitz William, Lord of Elmelery and Sprotborough, co. York.
~Burke's A Genealogical History of Dormant, Abeyant, Forfeited and Extinct Peerages, p.52
• Background Information. 141
Agnes was the daughter of a Roger Bertram as well as a sister of another Roger Bertram who died leaving only one child, als named Agnes. This Agnes d.s.p. long before 29 Jan 1311, when the descendans of her father's four sisters were found to be her heirs. Among these were Sir William Fitz Thomas, son and heir of Sir Thomas Fitz William by Agnes, the first sister.
~Cokayne's Complete Peerage, 2nd Edition, Vol. II, p. 162
Agnes married Thomas Fitz William, son of William Fitz William and Ela de Warenne 141.,645 (Thomas Fitz William was born about 1195 in Sprotborough, Doncaster, Yorkshire, England and died in 1267-1279 in Yorkshire, England 141.)