After cross checking with marriage records, I was able to confirm that "Asa Thompson, b. 2-1-1810 Ky., m. 6-24-1830 Sally Ann Johns" listed at https://archive.org/details/pettusfamilycomp00stac/page/49/mode/1up should have been Asa Pettit. The author of the document appears to have replicated "Asa Thompson the lawyer" who handled Asa's father's, Thomas Pettit, property purchase from "Charles Yancey of Louisa Co., Va." when listing Thomas Pettit's children - Nancy Kemper, Asa Thompson, Samuel, Lucinda Gibson, William, dau. m. John Price, dau. m. Madison Grooms and dau. m. Thomas Conley.So, with this sorted out, if anyone has any additional information about this family line that can confirm and/or supplement the information at https://archive.org/details/pettusfamilycomp00stac/page/49/mode/1up, I'd greatly appreciate it.