List of Taxable Property in Madison County, MS Territory - Dated 19 July 1810 List the name McCain, John twice
North Alabamians in the War of 1812, Valley Leaves, Vol 2, No 4, June 1968, p 101, lists are from "Publications of the Mississippi Historical Society", Vol 4, pub 1921, Jackson, MS, shows John McCain, private in the 16th Regiment (Burrus') of Mississippi Militia
Madison County, MT Tax Lists, Valley Leaves, Tenn Valley Genealogical Society, Vol 4, No 4, June 1970 lists John in 1812, 1813, 1815
February 10, 1826, Shelby county Records, John McCain received in full all that was coming to James McCain from Jane McCain's estate.
From Ron Bullock email dated December 29, 2004, RBul1865@@aol.com: "James McCain and his brother John were found in Concordia Parish, LA, in the census of 1820.