You were right. It was not the Apache, it was the Comanche and Wichita.
Elizabeth Priscilla Cheser might be the Elizabeth Cheser living with my James M. Cheser in the 1880 Montague County, Texas Census. What is the age of Elizabeth P. living with James Cheser and Minerva B. in that 1860 Census? If it is 1866 or very close, that might prove the connection of that James Cheser being my James M. Cheser.
What document proves his middle name as Matthew?