| Major Sir William Twysden Bart (1707 - 1767) |
Henry Duncan (1739 - 1814) |
| Mary Jarvis (ca1741 - 1818) |
Mary French (<1739 - 1823) |
| Captain Thomas Twysden | Isabella Duncan |
| b. 20 Oct 1765 d. 4 Oct 1801, at sea, off Plymouth (or Newfoundland) . 'A short but distinguished career in the Navy' - J R T |
b. 23 Aug 1764, Saint Saviour, Dartmouth, Devon d. ca Aug 1846, Totnes district, Devon . Always lived with her parents, with her husband at sea. |
| Admiral Henry Duncan Twysden Rev Thomas Twysden |