Family: Seth Langdon / Elizabeth Avery (F1745)
m. 21 Jun 1807Joseph Avery (1747-1814) 
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Deborah King (1750-1830)
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Joseph Babcock Avery (1791-1881)  |
| Ansey Avery (1788-1850) |
| Rebecca Avery (1779-1867) |
| Sally Avery (1784-1846) |
| Samuel K Avery (1773-1849) |
| Elisha Avery (1775-1795) |
| Polly Avery (1794-1857) |
| Seth Langdon (1784-1863) |
| Elizabeth Avery (1782-1863)
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| Charles Rollo Langdon (1823-1889) |
| Gilbert Horace Langdon (1821-1851) |
| Gordon Langdon (1826- ) |
| Martin Howard Langdon (1811-1896) |
| Solomon Mead Langdon (1816-1847) |
| Lydia Roxana Langdon (1814-1859) |
| Minerva Ardalissa Langdon (1808-1889) |
| Alvira Deborah Langdon (1810-1845) |
| Mary Lovena Langdon (1818-1898) |