The Jacob Tarwater House was built around 1850.
Location: 8400 Bud King Lane, Knoxville
This date comes from the Knox County GIS website. It features a PDF list of "Historic Sites of Knox County, TN."
I haven't had a chance yet to go out and photograph the Jacob Tarwater House yet. However, Knox Heritage has a good picture of it in its Picasa web album of antebellum homes. Click here to see it.