Donaldson and Comfort are my g-g-g-grandparents and I have some information which I hope will be helpful:
Donaldson was born in Virginia and married Comfort Pinkard (b. 1812) on December 16, 1846 in Talbot County, Georgia.A Donaldson Huff is listed in the 1830 Jones County, GA Census and in the 1840 Tablot County Census.
Comfort was probably Donaldson's second wife as the 1850 Census notes children born before their marriage in 1846. Nine children, however, were listed in the 1850 Census: Nancy b. abt. 1831 Louisa b. February 4, 1832 m. William Harper McCrorey Dec. 23, 1856,Upson Co GA d. December 30, 1909 John b. abt. 1834 Lewis b. abt. 1838 William b. October 11, 1839 in Virginia m. Catherine Sophronia Wilson d. May 10, 1890 Donaldson b. abt. 1842 Augustus b. abt 1844 in Georgia Eugene b. abt. 1848 David b. abt. 1849
I have further information including information from the Huff family Bible in the possession of one of my cousins in Macon, GA, but unfortunately it does not include descendants of your Thomas.If you have information on Thomas' descendant, I would very much appreciate your sharing such.