Susan; My family remembers Clyatt's Pharmacy very well. I have pretty much all of your family in my files. But, the knowledge base has not been expanded since my previous posts on this board. Thomas and Frances had 5 kids: Catherine, 1833; Eliza A, 1835 m Leroy Wood; James, 1837; John Thomas, 23 Dec 1841 - 15 Jan 1921 m Rebecca A Justice; Rebecca E, 1848 m Matthew S Wood. In addition to the census records you list in 1880 Frances is listed with John T as a widow; so Thomas died bet 1870-1880. Frances died 2 Feb 1900. Her obit is here:
http://files.usgwarchives.net/ga/meriwether/newspapers/1902....I can't prove it yet but I believe that Thomas is the younger brother of Jonathan Clyatt of Jasper/Harris Co, GA. Jonathan married Nancy Milam Nov 1825 in Jasper Co. On the 1830 census in Harris Co Jonathan is listed with Nancy and another male 15-20. Will entertain any questions.
Donald Horton