I found J.M.H. in the 1880 Bedford Co. census with a new wife Salie R. J.E.(Jesse Ebenezer) also there in the same District.
I believe that J.M.H.is most likely descended from Robert Coleman who is covered in the Book " Robert Coleman From Va. to Tx. 1652 to 1965" by Judge J.P. Coleman of Mississippi. see page 71 where it says "Isaiah Moberley stated that he was from Bedford Co. Tennessee"
It is possible that J.M.H. is listed in the 1850 Bedford Census, living at the same place and the first name of John.His residence being just ahead of Nancy Coleman age 74.