Katherine Mary Vansittart1 
From 4 August 1849, her married name became Conybeare.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 279. Hereinafter cited as The New Extinct Peerage.
J. C. Conybeare1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 279. Hereinafter cited as The New Extinct Peerage.
George Henry Vansittart1 
He was educated at Winchester College, Winchester, Hampshire, England.2 He was educated at Christ Church, Oxford University, Oxford, Oxfordshire, England.2 He was educated at Military Academy, Strasbourg, France.2 He gained the rank of General on 19 July 1821.2
Children of George Henry Vansittart and Anna Maria Copson
- George Henry Vansittart2 b. 1823, d. 1885
- Augustus Arthur Vansittart1 b. 24 Jul 1824, d. 17 Apr 1882
- [S40] L. G. Pine, editor, Burke’s Genealogical and Heraldic History of the Landed Gentry, 17th edition, (London, England: Burke’s Peerage Ltd, 1952), page 1862. Hereinafter cited as Burke’s Landed Gentry, 17th ed.
- [S18] Matthew H.C.G., editor, Dictionary of National Biography on CD-ROM (Oxford, U.K.: Oxford University Press, 1995). Hereinafter cited as Dictionary of National Biography.
J. W. Fleming1
Child of J. W. Fleming
- Elizabeth Harriet Fleming+1 d. 3 Apr 1906
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.
Susan Alice Blane1 
From 30 July 1878, her married name became Vansittart.1
Children of Susan Alice Blane and Robert Arnold Vansittart
- Robert Gilbert Vansittart, 1st and last Baron Vansittart+1 b. 1881, d. 14 Feb 1957
- Arnold Bexley Vansittart1 b. 24 Sep 1889, d. 1 May 1915
- Guy Nicholas Vansittart+1 b. 8 Sep 1893
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.
unknown son Vansittart1 
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.
William Vansittart1 
He held the office of Member of Parliament (M.P.) for Windsor.1 He was with the Honourable East India Company Service.1
Children of William Vansittart and Emily Anstruther
- William Henry Vansittart1
- Emily Eden Vansittart1 d. 27 May 1905
Child of William Vansittart and Henrietta Humphreys
- Caroline Bertha Vansittart+1 d. 13 Jul 1919
Child of William Vansittart and Melanie Jenkins
- Charles Edward Bexley Vansittart+1 b. Dec 1867
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.
Robert Arnold Vansittart1 
He gained the rank of Captain in the 7th Dragoon Guards.1 He was appointed Fellow, Royal College of Surgeons (F.R.C.S.)1 He was appointed Member, Order of the British Empire (M.B.E.)1 He lived at Foots Cray Place, Kent, EnglandG.1
Children of Robert Arnold Vansittart and Susan Alice Blane
- Robert Gilbert Vansittart, 1st and last Baron Vansittart+1 b. 1881, d. 14 Feb 1957
- Arnold Bexley Vansittart1 b. 24 Sep 1889, d. 1 May 1915
- Guy Nicholas Vansittart+1 b. 8 Sep 1893
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.
Coleraine Robert Vansittart1 
He fought in the Crimean War.1 He gained the rank of Captain in the 11th Hussars.1 He lived at Shottesbrooke Park, Berkshire, EnglandG.1
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.
G. J. Blane1
Child of G. J. Blane
- Susan Alice Blane+1 d. 13 Feb 1919
- [S21] L. G. Pine, The New Extinct Peerage 1884-1971: Containing Extinct, Abeyant, Dormant and Suspended Peerages With Genealogies and Arms (London, U.K.: Heraldry Today, 1972), page 280. Hereinafter cited as The New Extinct Peerage.