I remember my mother's frustration that she had not thought to ask her mother about these relationships before she died - Mom was certain that her mother knew all of them. Here are their immediate relationships that I have been able to find. If you have any further information on any of them, please contact me at this link.
Thomas Watson 1787-1838 m.Sarah Gill 1794-1867 1 William Watson 1818-1849 2 Hannah Watson 1820-1896 . m.Thomas Wallace 1816-1893 3 Rachel Watson 1822-1851 . m.David Enoch Buzzell 1814- 4 Thomas Watson 1825-1892 . m.Rachel Wallace 1827-1854 5 Mary Jane Watson 1827-1885 6 Elizabeth Watson 1829-1900 7 Joseph Mark Watson 1832-1886 . m.Mary Louisa Chartier 1835- 8 Sarah Watson 1835-1899 . m.Charles Willard 1834- 9 John Gill Watson 1837-1901 Jane Wallace 1820-1905 m.William Watson 1818-1849 1 Mary Ann Watson 1846-1855 2 Sarah Eunice Watson 1848-1859 m.Charles Gillespie 1858- Rachel Wallace 1827-1854 daughter of Isaac Wallace and Mary Salkeld m.Thomas Watson son of Thomas Watson and Sarah Gill above 1 William Watson 1851- 2 Edwin Watson 1853- 3 Rachel Watson Isabella S Wallace 1834-1877 sister of Rachel m.Thomas Watson 1825-1892 1 Thomas Story Watson 1857- 2 Isabella Mary Watson 1859- . m.Ulne Neil 3 George Byron Watson 1870-1870 Jacob Wallace 1794-1849 m.Rachel Watson 1796-1851 many descendants William Wallace 1775-1842 m.Elizabeth Watson 1774-1863 many descendants