| Children |
| | 1. Elizabeth Trevithick, b. Bef 30 Dec 1811, Illogan, Cornwall, UK  , d. 1812 (Age > 0 years) [natural] |
| + | 2. Elizabeth Trevithick, b. Abt 1813, Illogan, Cornwall, UK [natural] |
| | 3. Richard Trevithick, b. Bef 13 Feb 1813, Illogan, Cornwall, UK [natural] |
| | 4. Mary Trevithick, b. Abt 1816, Illogan, Cornwall, UK , d. Bef 3 Mar 1833, Parr, St. Blazey, Cornwall, UK (Age < 17 years) [natural] |
| | 5. Sarah Trevithick, b. Abt 1817, Illogan, Cornwall, UK [natural] |
| | 6. Blanche Trevithick, b. Abt 1818, Illogan, Cornwall, UK , d. 21 Jun 1910, Victoria, British Columbia, Canada (Age 92 years) [natural] |
| | 7. John Trevithick, b. Abt 1819, Camborne, Cornwall, UK , d. Bef 15 May 1819, Illogan, Cornwall, UK (Age < 0 years) [natural] |
| | 8. John Trevithick, b. Abt 15 May 1822, Shank Town, St. Blazey, Cornwall, UK , d. 22 Jan 1889, Redruth, Cornwall, UK (Age 66 years) [natural] |
| + | 9. Joseph Knight Trevithick, b. Abt 8 Jun 1823, Shank Town, St. Blazey, Cornwall, UK , d. 8 Sep 1880, Victoria, British Columbia, Canada (Age 57 years) [natural] |
| | 10. Thomas Trevithick, b. Bef 16 Oct 1824, Ch. Town, St. Blazey, Cornwall, UK [natural] |
| | 11. Francis Trevithick, b. Bef 3 Jun 1827, Town, St. Blazey, Cornwall, UK , d. Bef 5 Aug 1833, Parr, St. Blazey, Cornwall, UK (Age < 6 years) [natural] |
| | 12. Fanny Trevithick, b. Bef 3 Jun 1827, Ch. Town, St. Blazey, Cornwall, UK , d. Bef 6 Sep 1828, Ch. Town, St. Blazey, Cornwall, UK (Age < 1 years) [natural] |
|
Bef 1788 - Bef 1828 (< 40 years)
