person could be:
John McRoberts, or
William Rawlings McRoberts, or
James S. McRoberts, or possibly someone else.
Contributed by Renee Schaeffer who states:
This photo was given to me by the Jesse Emmons family, daughter of John W. and Martha. It could be would be Joseph Emmons who died in 1868 or a Day. I doubt that Jesse would have had any other McRoberts photos. Joseph Emmons was John Emmons and Mary Jane Emmons-McRoberts father which is a thought.