You might find this link interesting. The actual General Order 49.
https://books.google.com/books?id=JM63DAAAQBAJ&pg=PT100&lpg=PT100&dq=Order+for+the+Making+and+Granting+Paroles+1863&source=bl&ots=epoc1RGQmP&sig=cQu1alXP074REMJM_p7tZOtZyOM&hl=en&sa=X&ved=0ahUKEwiN6aSksYLZAhUGPN8KHQIbBP4Q6AEIMDAB#v=onepage&q&f=false
Thanks...just seeing the link. So, my great-great grandfather must have been a prisoner?