Here are my working notes for this family: please treat with caution!
They're from Marianne Eastgate's online tree which includes a few errors, to which I've been adding info from this thread.
I'll welcome any corrections
Denis
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4 Thomas MARTYN Dr. b 1774 c: 16 APR 1774 d: JUN 1826
m. Sarah Darke 17 Nov 1801, Hatherleigh (SD: 1778-ca Aug 1852?)
5 Gertrude Kinuell MARTYN 16 Aug 1802 Hatherleigh, d: AUG 1823
5 Elizabeth Drew MARTYN 21 Sep 1803 Hatherleigh
5 Mary Darke Drew MARTYN 30 Aug 1805 Hatherleigh
5 Sarah MARTYN b 1806 Hatherleigh, c 18 Nov 1806 St Columb Maj
5 Mary Agnes MARTYN 5 Oct 1807 St Columb
5 Thomas Darke MARTYN Dr. c 11 Jul 1811 - d ca Feb 1891 St Columb
+ Mary Frances Glubb, m Liskeard ca Nov 1838
- d St Columb, ca Nov 1880, aged 65
6 Mary Frances MARTYN c 19 Feb 1841 St C Maj, bd 18 Mar 1843
6 Sydney Thomas MARTYN c 25 Jun 1842, bd 17 Feb 1843 (7 mos)
6 Frances MARTYN b 10 Feb 1844, bd 27 Aug 1910 (of Ashleigh, St C)
6 Janet MARTYN c 7 Aug 1845, bd 15 Jun 1865, aged 20
6 Sydney Glubb MARTYN c 24 Aug 1849, d Dec1876 Ongar, aged 27
6 Emily Lyne MARTYN c 24 Aug 1852, bd 1 Jun 1934, aged 81, of Ashleigh, St Columb
5 John MARTYN - 9 Nov 1814, d 1882
- clergyman, Vicar of Ibberton, Dorset
+ Margaret Alner Harvey, c 6 Mar 1833, m Jun1856 Sturminster
5 William MARTYN - 30 Sep 1815, d ca. Aug 1896 Wandsworth
- doctor, in Kensington 1851, 1861
+ Elizabeth Bowen Pridham, m ca. Feb 1854 Bath
- Elizabeth Bowen Reed, b 1821/2 Brittany, d ca. May 1898 Wandsworth
m1. 6 Jul 1848 (Clifton) John Drake Pridham (?1812/3-ca.Feb 1853)-> Mary b. 1849 Mauritius
6 Orlando Bridgman MARTYN - b 1855
6 William Edward MARTYN - b 1856
6 Edith Mary MARTYN - b 1857
6 Constance Elizabeth MARTYN - b 1859
5 Silas Edward MARTYN - c 21 Apr 1817, d ca Nov 1887
- (Edward) - warehouseman / East India merchant
+ Mary Matilda Allin, m Wandsworth 7 May 1850
6 Isabel Allin MARTYN
6 Charles Edward MARTYN
6 Henry Allin MARTYN
6 Florence Mary MARTYN
6 Alice Maud Martyn - b ca. Feb 1858 Kensington
6 Ellen Darke Martyn - b ca. Nov 1859 Kensington
6 Emily Constance Martyn - 18 Aug 1861 Kensington
6 Thomas Allin Martyn - b ca. Aug 1863, d ca. Aug 1868
6 ?Ernest William Martyn b ca. Feb 1869, d ca. Nov 1869
5 Ann MARTYN [?? - might mean Mary Agnes]
5 Maria Darke MARTYN - c 30 Mar 1818
+ Thomas TRELOAR, m Enoder 19 Sep 1845
6 Charles Edward TRELOAR c 25 Mar 1847 Kenwyn
6 Henry Martyn TRELOAR c 28 Jan 1849 Kenwyn
6 Maria Louisa TRELOAR c 1 May 1851 Kenwyn