Welcome aboard!
Not quite an answer to your question, but Thomas Mass grew up in Wrentham/Norfolk, Mass (where I am planning to be buried) and ultimately ended up in Andersonville. He wrote a serialized account of his time there in the July/August editions of Century magazine, if you're curious about his time there. He was a big proponent of "Big Pete" Aubrey being the man who brought down the raiders. More links about him that you may find helpful, including a photo of him posted on his Find a Grave page.
The Century Magazine began as Scribner’s Monthly in 1870, and became Century Magazine in 1881. It brought readers a wide range of general-interest articles...
archive.org
www.norfolkmass.gov
Son of Lurena Ware & Levi Mann. He was an 18 year-old Teacher from Wrentham, MA, when he enlisted in that town on May 20, 1861 and was mustered into the 18th Mass. Infantry on August 24, 1861 as a Private in Co. I. Mann was one of seven men from Co. I cited for their bravery at theBattle of...
www.findagrave.com