Question: Which United States Secretary of War under Franklin Pierce was elected President under the Provisional Confederate States Constitution?
Related documents: [0]  [DOC] The Confederate States presidential election of 1861 was the first and only presidential election held under the Permanent Constitution of the Confederate States of America. Jefferson Davis, who had been elected President and Alexander H. Stephens, who had been elected Vice President, under the Provisional Confederate States Constitution, were elected to six-year terms (February 22, 1862 – February 22, 1868) as the first permanent President and Vice President of the Confederate States of America. [END] 
[1]  [DOC] Jefferson Davis (born Jefferson Finis Davis; June 3, 1808 – December 6, 1889) was an American politician who served as the President of the Confederate States from 1861 to 1865. He was a member of the Democratic Party who represented Mississippi in the United States Senate and the House of Representatives prior to becoming president of the Confederacy. He was the 23rd United States Secretary of War, serving under U.S. President Franklin Pierce from 1853 to 1857. [END] 
Answer: 
Jefferson Davis
Jefferson Davis