The fireback from the Lott site is apparently identical to one of which a
fragment was excavated at the site of Shadwell, Jefferson's birthplace in
Virginia.  It burned down in 1770.  See Hidden America by Roland Wells
Robbins and Evan Jones (1959), page 86.  An identical complete example is
illustrated in The Bible in Iron by Henry C. Mercer (1961), #363; it is dated
"Oxford  1746" along the base.  The Lott house example in the photo seems to
have a trace of the word Oxford on its base.

    Also, there is a complete fireback of exactly the same design in
Clermont, the Livingston family home in Columbia County, now a State Historic
Site.  Archeological excavations there also revealed a fragment of a fireback
of this design.