Jefferson Davis

Davis graduated from West Point in 1828, served in the Mexican War, and as United States Senator from Mississippi. In 1853 he was appointed Secretary of War by President Franklin Pierce. When Mississippi seceded from the Union, Davis was appointed major general of the state militia. He was then chosen to be provisional president of the Confederate government. He was elected to a six-year term as President in February, 1862. As the war progressed, Davis took on more power and became more autocratic. He fled from Richmond in April, 1865 and was captured May 10. He was held as a prisoner at Fort Monroe for two years. Jeff David died in 1889.
Source: "The Civil War Dictionary" Boatner, Mark Mayo.