Bentley Runyan House mystery

A history blog out of Cleveland has highlighted this 1857 painting of the Bentley Runyan family in front of their Mansfield home.  By artist Frederick Elmore Cohen, the painting is in the Allen Memorial Museum at Oberlin, OH.  Christopher Busta-Peck has published Part 1 of a two part article about the painting on his Cleveland Area History page http://www.clevelandareahistory.com/2012/12/in-search-of-bright-green-house-bentley.html with part 2 promised shortly. 
The painting immediately struck me as similar or identical to one I had seen in the Richland County Museum in Lexington.  The painting I saw there, I understood to be of an unkown family and house in Mansfield.  I've recieved confirmation now that it is the "same" painting, but I have yet to recieve an answer of how that can be...whether two paintings were made, or a copy made and displayed in Lexington, or other explanation. 
So disregarding this perplexing aspect, I highly recommend reading the article and learning some newly uncovered Mansfield history.