I monitor the Thornhill surname site and this post was made tonight. With the TN reference and knowing the Gass surname is in Dade County too. Thought I should pass this on you all.... Alexander C. Thornhill and his wife Minerva B. probable son: Joseph Thornhill marriage license to wed Mary Polly Gass on 31 Aug 1830 in Jefferson Co. Tn. She was born in 1805 and died after 1880. He died around 1842. Probable children were: Thomas b Mar 1829 m Leah W. Joseph Marion b 1830 m 30 Mar 1847 to Sarah Crow or Murray. 8 children Samuel b 1832/5 m 30 Sep 1868 to Margaret E. Cline in Jefferson Co. Tn. Jane b @ 1845 m 10 Jan 1859 in Jefferson Co. to James Ashmore. John A b @ 1841 died 24 Jun 1865. Margaret Emily b 1 May 1842 m 10Oct 1861 to Wm. A. Bowers (1839-1905). She died 24 APr 1899 and is buried in the Cedar Grove cemetery in Hamblen Co. TN. 13 children. Gil