The first and only President of the traitorous Confederate States of America was Jefferson Davis.
Prior to the Civil War, Jefferson Davis was a Senator representing Mississippi. When the Confederate State seceded and committed treason, they formed a provisional government and named Davis their provisional leader.
Davis was eventually elected President of the traitorous Confederate States of America. Davis was captured in 1865 by the American/Union Cavalry and was held for two years.
He was not tried and was eventually released. He eventually became a hero the revisionary Lost Cause supporters of the traitorous Southern rebellion.