Janet Denise Mitchell1
- [S8] BP1999 volume 1, page 52. See link for full details for this source. Hereinafter cited as. [S8]
Sybil de Montgomery
Child of Sybil de Montgomery and Robert FitzHamon, Earl of Gloucester
- Mabel FitzHamon+ b. c 1085, d. 1157
- [S37] BP2003 volume 2, page 2187. See link for full details for this source. Hereinafter cited as. [S37]
Caroline Mary Blanche Gibbs1 
Roland Vicary Gibbs1 
Hamon (?) 
A tenant-in-chief in Essex.2 He was a dapifer (steward.)2
Major Guy Melvil Gibbs1 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He gained the rank of Major in the North Somerset Yeomanry.1 He fought in the First World War.1 He was awarded the Territorial Decoration (T.D.)1
Children of Major Guy Melvil Gibbs and Margaret Olivia St. John
- Anna Patricia Gibbs+1 b. 24 Oct 1915, d. 7 Nov 2004
- Sir Martin St. John Valentine Gibbs+1 b. 14 Feb 1917, d. 8 Feb 1992
- Ursula Mary Gibbs+1 b. 20 May 1919, d. 2000
- Field Marshal Sir Roland Christopher Gibbs+1 b. 22 Jun 1921, d. 31 Oct 2004
Amicia de Montfort 
Her married name became de Beaumont.
Children of Amicia de Montfort and Robert de Beaumont, 2nd Earl of Leicester
- Robert de Beaumont, 3rd Earl of Leicester+1 d. 1190
- Hawise de Beaumont+ d. 24 Apr 1197
- Margaret de Beaumont+
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume VII, page 527. Hereinafter cited as The Complete Peerage.
Margaret Olivia St. John1 
From 6 August 1914, her married name became Gibbs.1
Children of Margaret Olivia St. John and Major Guy Melvil Gibbs
- Anna Patricia Gibbs+1 b. 24 Oct 1915, d. 7 Nov 2004
- Sir Martin St. John Valentine Gibbs+1 b. 14 Feb 1917, d. 8 Feb 1992
- Ursula Mary Gibbs+1 b. 20 May 1919, d. 2000
- Field Marshal Sir Roland Christopher Gibbs+1 b. 22 Jun 1921, d. 31 Oct 2004
- [S8] BP1999 volume 1, page 52. See link for full details for this source. Hereinafter cited as. [S8]
- [S37] BP2003 volume 1, page 418. See link for full details for this source. Hereinafter cited as. [S37]
- [S7177] Bob Janes, “re: Bosanquet Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 27 June 2014. Hereinafter cited as “re: Bosanquet Family.”
Sir Martin St. John Valentine Gibbs1,2 
He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He fought in the Second World War, where he was mentioned in despatches.1 He was awarded the Territorial Decoration (T.D.)1 He was awarded the Distinguished Service Order (D.S.O.)1 He was appointed Companion, Order of the Bath (C.B.) in 1958.1 He held the office of High Sheriff of Gloucestershire in 1958.1 He gained the rank of honorary Colonel in the Royal Wiltshire Yeomanry (Territorial Army.)1 He held the office of Justice of the Peace (J.P.)1 He held the office of Deputy Lieutenant (D.L.) of Wiltshire in 1972.1 He was appointed Knight in 1991.2 He lived at Ewen Manor, Cirencester, Gloucestershire, EnglandG.1
Children of Sir Martin St. John Valentine Gibbs and Mary Margaret Mitford
- Caroline Margaret Gibbs1 b. 30 May 1949
- Mary Elizabeth Gibbs+1 b. 28 Mar 1951
- [S8] BP1999 volume 1, page 52. See link for full details for this source. Hereinafter cited as. [S8]
- [S266] World War II Unit Histories – Officers, online http://www.unithistories.com/units_index/default.asp?file=../officers/personsx. Hereinafter cited as World War II Unit Histories – Officers.
Roger de Beaumont, Seigneur de Portaudemer 
He was also known as Roger de Bellomont, Earl of Mellent.3 He gained the title of Seigneur de Portaudemer.
Children of Roger de Beaumont, Seigneur de Portaudemer and Adeline de Meulan
- Robert de Meulan, 1st Earl of Leicester+ b. c 1046, d. 5 Jun 1118
- Henry de Beaumont, 1st Earl of Warwick+3 b. c 1048, d. c Jun 1119
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume VII, page 521. Hereinafter cited as The Complete Peerage.
- [S37] BP2003 volume 3, page 4078. See link for full details for this source. Hereinafter cited as. [S37]
- [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 399. Hereinafter cited as Burkes Extinct Peerage.
- [S6] Cokayne, and others, The Complete Peerage, volume III, page 167.
