Samuel Marcus Barnhill, III and Susannah Pettit Family
m. Abt 1800 | Samuel Marcus Barnhill, II (1761-1844) 
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 | Elizabeth Fire (1760- ) |
| James Barnhill (1785- ) |
| Mary Jane Barnhill (1788- ) |
| Robert Barnhill (1790-1872)  |
| Mary Margaret Barnhill (1795- ) |
| John Barnhill (1797-1873) |
| Nancy Barnhill (1798-1873) |
| Daniel K. Barnhill (1800-1885) |
| Sarah Barnhill (1802-1875) |
| Joseph Barnhill (1809-1875) |
| Samuel Pettit (1755- ) |
| Elizabeth Dozier Bragg Pettit (1760- ) |
| Susannah Pettit (1780- )
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| Samuel Marcus Barnhill, III (1782-1846)
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