I need just a little more information here than you've gave as I do want to help you if I can, first can you give date's of birth or death's.
If your James M. Tomerlin was from Ireland then he is not a part of this branch, but I do not think this is the case I think that Monte Tomerlin and the others are right!
This branch was of Va. on to N.C. then to Tenn. to Ark. to Texas and so on, I looked at the children of this Moses there was no James but...There are more than one Moses and more than one James, so this is why when you search or research you need date's and places thats why we need help from other family too.
I do want to help you so please try and get me more info here and maybe, I are others out there have what you need on your family, your James may be from a younger Moses are one of his siblings and if you don't knowfor sure then you can see why we would have to search and we need more to work with.