The mystery has been solved! The man in the picture has been identified as my 2nd Great Grandfather - Thomas L. Blackwell. He was from the Alligator District in Chesterfield County, SC. According to the new book discovered containing all Confederate Rolls of South Carolina Units at the Richland County Public Library, he was a Third Corporal in the South Carolina 26th Regiment Infantry, Company B. He was wounded twice, once at the siege of Petersburg. Any other information yall could help me with would be greatly appreciated!