Federal soldiers who died in the Cahawba Military Prison during the Civil War, known by the prisoners as "Castle Morgan," were not buried where they now rest. Their original burial places in Cahawba are unknown, but in 1867 the federal government exhumed the dead and moved them to a cemetery in Montgomery, Alabama, and later moved them again to Marietta National Cemetery in Georgia. With each move, new lists of the dead were made, and the number of unknowns grew as names became separated from bodies, although the original Cahawba hospital ledger recorded 142 deaths. Several government employees and citizens of Northern states also died in Castle Morgan. Major Hiram Solon Hanchett of the 16th Illinois Cavalry led an unsuccessful revolt inside the prison on January 20, 1865; in March, when other soldiers were sent to parole camp, commandant Sam Jones detained him as a suspected spy, and in April, as Union forces approached, Confederate soldiers seized him, took him from town, and executed him, leaving his body in an unmarked grave.