I wonder if we may have a connection. My great grandparents, Albert G. Briggs and Martha Ann Briggs were in Lamar County, TX, at approximately the same time as your people. My grandmother, Martha Ann Briggs (Arman) was born in Paris, TX, in 1879. My great-grandmother apparently died the same year and then A.G. Briggs and his children moved to Arkansas.
A.G. was a Civil War veteran. I'm at work right now and don't have his info, but I can check at home.