"The Mansion"

Information taken from Greeneville: One Hundred Year Portrait.
The John Dickson House was a house so magnificent it became known as "The Mansion”.  It was a place of entertainment for notables passing through Greeneville, including President Andrew Jackson. William Dickson built this house for his brother John, who emigrated to the United States from Country Antrim, in 1818.  It was a two-story brick house with double chimneys at each end.  It was entered through a long hall with huge rooms on each side.  The second and third floor rooms, all with fireplaces, were used as bedrooms.  The interior woodwork was very fine, and probably was the work of Battersby and Hoy.  The building was later split in half into Lancaster's Jewelry and a law office.
 
The following is taken from an interview with Haskell Fox.
The building had sandy mortar and the beams are tied through the entire building.  It had a slanted roof with a Victorian appearance.  Either side has outline of a double chimney.  It could still be restored.  Most interior woodwork is original.  This is the only structure with a double chimney other than Dickson Williams mansion.  Irish architects Battersby and Hoy designed it most likely.  It had a Federal style front door.  The facade was changed to make it look like three stories and a flat roof was put across it.  Lancaster had a hanging bay window and then it was changed as seen in the picture below.
 

"The Mansion" in 2008.