My 3rd Great Grandfather was Sovereign W Jackson Ellis. He was with the Sixth Alabama Infantry Regiment Co. "A". Originally "L" & "K". I've been able to learn that he mustered into service 4 June 1861 in Cornth, Mississippi. He was deceased by 25 or 29 Apr 1862. He was admitted to General Hospital No. 18 (formerly Greaner's Hospital) on 26 March 1862. My question is how can I find out where he is buried. Any assistance you can provide would be appreciated.