Nothing for sure, but a few interesting notes....
the daughter's name of Hassie.
there is an Elom/Elon? in the Martin family, but really don't know where that name came from and it's actually in another branch.
can't find him in 1880, can't find George and Hassie either.
I found informaion I had put in my George T file that connected GT to a Robert Thomas Martin of Hill County. This Robert Thomas was born in 1867, and only A Martin,4, female is listed in 1870. I have the info but don't recall this person made the connection. What I find is more a Colwin? Martin from Tennessee for that.