According to my notes which I received from a relative who has since passed away, Sarah "Sally" Nix is the daughter of John Wilson Nix and Sarah Caroline Sparks. In which case she wouldn't be the same Sarah "Sally" Nix as yours. I have no birth date, married name, or death date for her. Your message made me wonder if maybe she was the same person and she was actually their daughter-in-law rather than their daughter. However, their son is John Ervin Nix not John H. Nix and he married Mary Frances Roton. They did live in Arkansas, though. Sorry.