This is a Message Board Post that is gatewayed to this mailing list. Surnames: Porter Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/rw/Ig.2ADI/1204.1 Message Board Post: The Confederate Prison was in Alton, Madison County, Illinois. My great-grandfather, David Porter, was a prison guard who died of dysentery in 1865. To read about the prison see this site: http://www.censusdiggins.com/prison_alton.html