Michael, your gggrandfather signed an affidavit for my gggrandmother's widow's pension. Her name was Georgiana Owens her husband William J. Owens. Have you looked at the book "Polignac's Texas Brigade" by Alwyn Barr published Texas A & M Press in College Station , Texas. The 31st Texas Calvary was part of Polignac's Unit. I think you will find the book interesting.