Thomas Lawrence1 
He lived at St. Agnes, Cornwall, EnglandG.1
Child of Thomas Lawrence and Jane Rowse
- Thomas Lawrence+1 b. 12 Feb 1760, d. 13 Mar 1812
- [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 216. Hereinafter cited as The New Extinct Peerage.
Joseph Lawrence1
Child of Joseph Lawrence
- Thomas Lawrence+1 b. 13 Apr 1727, d. Aug 1811
- [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 216. Hereinafter cited as The New Extinct Peerage.
Jane Rowse1 
From 1759, her married name became Lawrence.1
Child of Jane Rowse and Thomas Lawrence
- Thomas Lawrence+1 b. 12 Feb 1760, d. 13 Mar 1812
- [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 216. Hereinafter cited as The New Extinct Peerage.
Anthony Rowse1
Child of Anthony Rowse
- Jane Rowse+1 d. Feb 1811
- [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 216. Hereinafter cited as The New Extinct Peerage.
Mary Tonkin1 
From 1 April 1788, her married name became Lawrence.1
Child of Mary Tonkin and Thomas Lawrence
- William Lawrence+1 b. 4 Feb 1789, d. 25 Nov 1855
- [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 216. Hereinafter cited as The New Extinct Peerage.
John Tonkin1
Child of John Tonkin
- Mary Tonkin+1 d. 12 Apr 1850
- [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 216. Hereinafter cited as The New Extinct Peerage.
Jane Clarke1 
From 21 September 1817, her married name became Lawrence.1
Children of Jane Clarke and William Lawrence
- Sir William Lawrence1 b. 2 Sep 1818, d. 18 Apr 1897
- Sir James Clarke Lawrence, 1st and last Bt.+1 b. 1 Sep 1820, d. 21 May 1897
- Jane Lawrence2 b. 10 Sep 1822, d. 2 May 1897
- Alfred Lawrence1 b. 29 Oct 1824, d. Nov 1825
- Alfred Lawrence+1 b. 19 Jun 1826, d. 9 Jun 1875
- Frederick Lawrence1 b. 4 Apr 1828, d. 31 May 1864
- Joseph Lawrence1 b. 9 Apr 1830, d. 30 Apr 1830
- Emma Lawrence2 b. 6 Aug 1832, d. 4 Feb 1874
- Caroline Lawrence2 b. 11 Dec 1834, d. 24 Jun 1853
- Sir Edwin Durning-Lawrence, 1st and last Bt.+2 b. 2 Feb 1837, d. 21 Apr 1914
James Clarke1
Child of James Clarke
- Jane Clarke+1 d. 14 Feb 1874
- [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 216. Hereinafter cited as The New Extinct Peerage.
Sir William Lawrence1 
He held the office of Alderman of London in 1855.1 He held the office of Deputy Lieutenant (D.L.) of London.1 He held the office of Sheriff of London and Middlesex between 1857 and 1858.1 He held the office of Lord Mayor of London between 1863 and 1864.1 He held the office of Member of Parliament (M.P.) for London between 1865 and 1874.1 He held the office of Member of Parliament (M.P.) for London between 1880 and 1885.1
- [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 216. Hereinafter cited as The New Extinct Peerage.
Sir James Clarke Lawrence, 1st and last Bt.1 
He held the office of Justice of the Peace (J.P.) for Surrey.1 He held the office of Alderman of London in 1860.1 He held the office of Justice of the Peace (J.P.) for Middlesex.1 He held the office of Justice of the Peace (J.P.) for the City of Westminster.1 He held the office of Sheriff of London and Middlesex in 1862.1 He held the office of Lord Mayor of London between 1868 and 1869.1 He held the office of Member of Parliament (M.P.) for Lambeth between 1868 and 1885.1 He was created 1st Baronet Lawrence [U.K.] on 16 December 1869.1 On his death, his baronetcy became extinct.1
Child of Sir James Clarke Lawrence, 1st and last Bt. and Agnes Harriette Castle
- Theodora Agnes Clarke Durning-Lawrence1 b. 11 Dec 1889
- [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 216. Hereinafter cited as The New Extinct Peerage.