Have you checked for the War of 1812 records on Thomas? You say he was commissioned in the War of 1812. If you do not live where you can go and pull up all the papers on him then send for them. You would send to the National Archives in Washington, D.C. If you are lucky you will find all sorts of things. When applying for pensions or land they would send in proof. Sometimes this proof were the actual pages from their bibles! Check this out if you haven't already. Hope this helps you some. Beverly