My genealogy of the family:
Samuel Clarke, d.1767; m.Mary Elizabeth Jervoise
1.Jervoise, ca 1771 CLARKE JERVOISE, of Idsworth (1734-5 Jan 1808 [per History of Parliament; Burke’s says 5 Jul 1808]); m.Kitty Warner
1.1.Thomas (ca 1765-1809)
1.2.Robert, d.1825
1.3.Rev. Sir Samuel, of Idsworth Park, cr Baronet 1813 (25 Nov 1770-1 Oct 1852); m.Elizabeth Griffenhoofe (1784-19 Nov 1856)
1.3.1.Sir Jervoise, 2nd Bt. (28 Apr 1804-1 Apr 1889); m.15 Jun 1829 Georgiana Thompson (d.25 Feb 1873)
1.3.1.1.Jervoise (Jun 1830-22 Apr 1872); m.20 Feb 1855 Sophia Horatia Churchill Long (d.24 Dec 1905)
1.3.1.1.1.Sir Arthur Henry, 3rd Bt. (3 Jan 1856-29 Aug 1902); m.1883 Florence Annie Light-Elwon (1856-18 Oct 1912)
1.3.1.1.1.1.[b.before m.] Arthur Francis (20 Jul 1882-13 Dec 1974)
1.3.1.1.1.2.Marjorie Olive (1886- )
1.3.1.2.Sir Henry, 4th Bt. (7 Sep 1831-2 Mar 1908)
1.3.1.3.Teresa (1835-2 Sep 1899); m.6 Jan 1868 John Delaware Lewis, of Westbury House and Memband (d.31 Jul 1884)
1.3.1.4.Janet (31 Oct 1837-25 Dec 1913); m.15 Jan 1867 James Small, of Dirnanean (d.31 Jul 1884)
1.3.1.5.Rachel (13 Dec 1840-27 Apr 1889); m.1st 14 Aug 1863 Arthur Henry Turner Newcomen, of Kirkleatham Hall (d.6 Apr 1884); m.2nd 1886 Charles Trotter, of Bishopsgarth
1.3.1.6.Clarice; m.22 Apr 1869 Frederick William Craven Ord (d.1894)
1.3.2.Samuel (2 Jan 1808-22 Feb 1890); m.3 Feb 1830 Emily Ann Cumming (d.17 Jul 1895)
1.3.2.1.Sir Harry Samuel Cumming, 5th Bt. (2 Apr 1832-28 May 1911); m.3 Aug 1874 Beatrice Evelyn Stopford Sackville (3 Jul 1853-4 Jul 1943)
1.3.2.1.1.Kathleen Margaret (1875-19 Apr 1935); m.14 Jan 1909 Hubert Clementi-Smith (12 Aug 1878-16 Aug 1958)
1.3.2.2.Archibald (4 Jun 1833-9 Feb 1835)
1.3.2.3.Cecil (1 Jan 1835-22 Oct 1908)
1.3.2.4.Alan Arthur (26 May 1836-9 Feb 1908); m.1st 1860 Frederica Charlotte Spooner (d.1861); m.2nd 1869 Helen Jane Cruickshank (d.1872); m.3rd 1874 Gertrude Stanhope Ward
1.3.2.4.1.Effie Mary Dora (3 Mar 1861-24 Mar 1938)
1.3.2.4.2.Sir Eustace James, 6th Bt. (14 Mar 1870-11 May 1916)
1.3.2.4.3.Nora Elphinston (21 Nov 1871-6 Sep 1961)
1.3.2.4.4.Sir Dudley Alan Lestock, 7th Bt. (27 Nov 1876-24 Aug 1933); m.28 Mar 1908 Grace Eostre Ellison (d.7 Nov 1950)
1.3.2.4.4.1.Gladys Agnes (18 Mar 1909-Mar 2001); m.3 Sep 1936 Kenneth Swire Southam
1.3.2.5.Eustace Neill (25 Sep 1846-30 Apr 1855)
1.3.2.6.Dorothea Victoria Amelia (7 Jun 1837-3 Feb 1863)
1.3.2.7.Ada Geraldine, d.1 May 1901; m.28 Dec 1869 Arthur Ramsay MacDonald (d.20 Apr 1906)
1.3.2.8.Annette Charlotte Laura, d.4 Dec 1913
1.3.2.9.Maud Mary Wedderburn; m.3 Sep 1890 Philip Henry Egerton (d.17 Jan 1893)
1.3.2.10.Bertha Rose Emily (26 Dec 1847-22 Oct 1868)
1.3.2.11.Sybil Gavine (25 Apr 1851-3 Jun 1899)
1.3.3.Anne (26 Dec 1799-24 Jan 1858); m.1st Mar 1817 Ralph William Grey, of Backworth House; m.2nd 26 Dec 1827 John Abel Smith, of Dale Park (d.7 Jan 1871)
1.3.4.Elizabeth (25 Feb 1801-15 Nov 1850); m.May 1821 Sir Charles Edward Grey (d.1 Jun 1865)
1.3.5.Harriot Mary (12 May 1802-21 May 1837); m.14 Jul 1831 Neill Malcolm, of Poltalloch
1.3.6.Lucy (26 Aug 1810-19 Jan 1861); m.23 Jan 1828 James Winter Scott, of Rotherfield (d.4 Jan 1873)