Unfortunately, I am at a dead end so to speak on Elisha and Elizabeth. However I am almost certain that Balloo was Elizabeth's birth surname. I have visited the grave site and the headstone reads as Elizabeth Balloo Anderson along with birth and death dates. I have attached a photo showing just that.

Unfortunately, census takers in those days may have misspelled the last name as Ballew. I have not looked at this in a while but I seem to remember, vaguely, something about Ballews in SC coming over from Ireland. But I cannot put my fingers on that info right now.

My wife has a friend that is studying to become a genealogist and I may get her to try to track down Elisha and Elizabeth. That appears to be my only possible option for now.