The John Sevier Cabin at Marble Springs was built around 1835.
Location: Southeast of Knoxville, on John Sevier Highway
I haven't had a chance yet to go out and photograph this house. However, Knox Heritage has a picture of it in its Picasa web album of antebellum homes. On that site, they call it Marbledale, and I think that this refers to the Sevier Cabin. Click here to see it.