For what's it's worth, I found the following family about 5 households from Rufus Roark in the 1910 census in precinct 3 in Sabine county, Texas. Rufus was another one of Margaret Roark's siblings. I don't know if they are related, but I thought I'd pass it on. His son Arthur and his family was living with him. Next door to Rufus was Robert & Pink Alla Caradine. Pink Alla Caradine was Rufus' daughter according to what I've been told by my cousins. So it's possible these are related.
John E Medley Justice Precinct 3, Sabine, TX abt 1870 Tennessee White Male Alice Medley Justice Precinct 3, Sabine, TX abt 1870 Illinois White Female Felma WillisJustice Precinct 3, Sabine, TX abt 1893 Texas White Female Willie Willis Justice Precinct 3, Sabine, TX abt 1895 Texas White Male