George Baker1
- [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.
Robert Vansittart1 
He graduated from Oxford University, Oxford, Oxfordshire, EnglandG, with a Doctor of Civil Law (D.C.L.)1 He held the office of Recorder of Windsor in 1770.1 He was Regius Professor of Civil Law at Oxford University, Oxford, Oxfordshire, 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 279. Hereinafter cited as The New Extinct Peerage.
Henry Vansittart1 
He was with the Honourable East India Company Service.1 He was member of the Bengal Council.1 He lived at Foxley, Berkshire, EnglandG.1
Child of Henry Vansittart and Catherine Maria Powney
- Henry Vansittart+1 b. 10 Jul 1784, d. 22 Apr 1848
- [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.
Catherine Maria Powney1
From 3 February 1783, her married name became Vansittart.1 From after 1786, her married name became Thompson.1
Child of Catherine Maria Powney and Henry Vansittart
- Henry Vansittart+1 b. 10 Jul 1784, d. 22 Apr 1848
- [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.
Thomas Powney1
Child of Thomas Powney
- [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.
G. N. Thompson1
- [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.
Henry Vansittart1 
He held the office of High Sheriff of Yorkshire in 1820.1 He lived at Kirkleatham, Yorkshire, EnglandG.1 He lived at Foxley, Berkshire, EnglandG.1
Child of Henry Vansittart and Teresa Newcomen
- Teresa Vansittart+2 b. 1813, d. 29 Apr 1887
- [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.
- [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 400. Hereinafter cited as Burkes Extinct Peerage.
Teresa Newcomen1 
From 2 September 1796, her married name became Turner.2 From 21 July 1812, her married name became Vansittart.1
Child of Teresa Newcomen and Henry Vansittart
- Teresa Vansittart+2 b. 1813, d. 29 Apr 1887
- [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.
- [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 400. Hereinafter cited as Burkes Extinct Peerage.
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
Sir William Newcomen, 1st Bt.1 
He was given the name of William Gleadowe at birth.1 He was created 1st Baronet Newcomen on 9 October 1781.
Children of Sir William Newcomen, 1st Bt. and Charlotte Newcomen, Viscountess Newcomen
- Teresa Newcomen+1 d. 1844
- Jane Newcomen3
- Charlotte Newcomen3
- Thomas Gleadowe-Newcomen, 2nd Viscount Newcomen+1 b. 18 Sep 1776, d. 15 Jan 1825
- [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 400. Hereinafter cited as Burkes Extinct Peerage.
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
- [S3409] Caroline Maubois, “re: Penancoet Family,” e-mail message to BENR, 2 December 2008. Hereinafter cited as “re: Penancoet Family.”
Charlotte Newcomen, Viscountess Newcomen1 
Charlotte Newcomen, Viscountess Newcomen was the daughter of Edward Newcomen.3 She married Sir William Newcomen, 1st Bt., son of Thomas Gleadowe and Teresa Workman, on 17 October 1772.1 She died on 16 May 1817.1 She was buried on 24 May 1817 at Weston, Somerset, England.3
She was created 1st Baroness Newcomen [Ireland] on 29 July 1800.1 She was created 1st Viscountess Newcomen [Ireland] on 25 January 1803.1
Children of Charlotte Newcomen, Viscountess Newcomen and Sir William Newcomen, 1st Bt.
- Teresa Newcomen+1 d. 1844
- Jane Newcomen2
- Charlotte Newcomen2
- Thomas Gleadowe-Newcomen, 2nd Viscount Newcomen+1 b. 18 Sep 1776, d. 15 Jan 1825
- [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 400. Hereinafter cited as Burkes Extinct Peerage.
- [S3409] Caroline Maubois, “re: Penancoet Family,” e-mail message to BENR, 2 December 2008. Hereinafter cited as “re: Penancoet Family.”
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”

