I'm doing a little research in Ancestry and found a few things.
John Clements born in NC about 1819 died near Soddy 1875 occupation gunsmith. 1840 census no luck yet finding him but several possibilities various spellings etc. 1850 census near Soddy occupation blacksmith 1860 census near Soddy occupation gunsmith.
His son John Clements 1841-1896 born near Soddy occupation gunsmith.
Interesting another son James Clements 1847-1928 occupation blacksmith.
John Sr bought land Soddy, Hamilton County, Tennessee 8 Dec 1842