1860's Greek Revival House: Trying to Solve a Mystery

The Greek Revival style is an adaptation of the classic Greek temple front employing details of either the Doric, Ionic, or Corinthian order. John J.-G. Blumenson, Identifying American Architecture , 1977 West elevation. The plaster was used as insulation, this was put in place when the building was first sided. This side of the house that I am looking at may be the original 14x16 log structure that was built on this site in 1862. I haven't pulled off anymore siding and corner boards to see how these logs were notched, I need to keep as much original material as possible to maintain the historic integrity of the house. So far, the house isn't giving up much information as to what year it was built. South elevation This past Friday I pulled off siding on the south elevation that was covering the lowest logs between the two doors (and underneath the window) that you see in the above photo... ...and discovered this - the corner of another log house! Apparently,