I saw this tin type, circa 1861, on eBay and knew instantly I had to have it because the seller did his research and discovered the subject was from Mt. Vernon, IL, my hometown. On the back he is identified as Americas Piper.
Americas (or Americus) Piper was born about 1841 in Illinois to Wiley and Matilda Piper. The Pipers are easily found in the 1850 and 1860 Jefferson County, Illinois censuses. In 1860 they had seven children, Amercus D. 18, Manirva E. 17, Charles A. 15, Harry M.13, Julia A. 10, Henry R. 7 and Wiley S. 4. Wiley Piper supported his family as a farmer.
The next year on 1 Aug 1861 Americas enlisted as a Private in the Union Army in the 44th Regiment, Illinois Infantry. Two years later he was killed in battle on 20 Sep 1863 at the Battle of Chickamauga. I don't know where Americas is buried, but using the Jefferson County Illinois Genealogy Trails page I was able to discover that many of Americas' immediate family are buried in the West Salem Cemetery in Mt. Vernon, IL. His mother died in November 1863, just two months after his death in battle, his father died before 1870.