Question: Which United States Secretary of War under Franklin Pierce was elected President under the Provisional Confederate States Constitution?

full_context: Document 1: Jefferson C. Davis: Jefferson Columbus Davis (March 2, 1828 – November 30, 1879) was a regular officer of the United States Army during the American Civil War, known for the similarity of his name to Confederate President Jefferson Davis and for his killing of a superior officer in 1862.
Document 2: Confederate States presidential election, 1861: 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.
Document 3: Confederate States Army: The Confederate States Army (C.S.A.) was the military ground force of the Confederate States of America (Confederacy) during the American Civil War (1861-1865). On February 28, 1861, the Provisional Confederate Congress established a provisional volunteer army and gave control over military operations and authority for mustering state forces and volunteers to the newly chosen Confederate president, Jefferson Davis (1808-1889), a graduate of the U.S. Military Academy on the Hudson River at West Point, New York, and colonel of a volunteer regiment during the Mexican–American War (1846-1848), later a United States Senator from Mississippi and U.S. Secretary of War in the administration of 14th President Franklin Pierce (1853-1857). By March 1861, the Provisional Confederate Congress expanded the provisional forces and established a more permanent Confederate States Army.
Document 4: Jefferson Davis Memorial Historic Site: Jefferson Davis Memorial Historic Site (also known as the Jefferson Davis Capture Site) is a 12.668 acre state historic site located in Irwin County, Georgia that marks the spot where Confederate States President Jefferson Davis was captured by United States cavalry on Wednesday, May 10, 1865. The historic site features a granite monument with a bust of Jefferson Davis that is located at the place of capture. The memorial museum, built in 1939 by the Works Progress Administration, features Civil War era weapons, uniforms, artifacts and an exhibit about the president's 1865 flight from Richmond, Virginia to Irwin County, Georgia.
Document 5: Congress of the Confederate States: The Confederate States Congress was both the provisional and "permanent" legislative assembly of the Confederate States of America that existed from 1861 to 1865. Its actions were for the most part concerned with measures to establish a new national government for the Southern "revolution", and to prosecute a war that had to be sustained throughout the existence of the Confederacy. At first, it met as a provisional congress both in Montgomery, Alabama and Richmond, Virginia.
Document 6: Jefferson Davis: 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.
Document 7: Confederate States Constitution: The Confederate States Constitution, formally the Constitution of the Confederate States of America, was the supreme law of the Confederate States, as adopted on March 11, 1861, and in effect from February 22, 1862, through the conclusion of the American Civil War. The Confederacy also operated under a Provisional Constitution from February 8, 1861, to February 22, 1862. The original Provisional Constitution is currently located at the American Civil War Museum in Richmond, Virginia, and differs slightly from the version later adopted. The final, hand-written document is currently located in the University of Georgia archives at Athens, Georgia. In regard to most articles of the Constitution, the document is a word-for-word duplicate of the United States Constitution. However, there are crucial differences between the two documents, in tone and legal content, primarily regarding slavery.
Document 8: Jeff Davis County, Texas: Jeff Davis County is a county in the U.S. state of Texas. As of the 2010 census, its population was 2,342. Its county seat is Fort Davis. The county is named for Jefferson Davis, who served as the 23rd United States Secretary of War in the 1850s, and then, during the American Civil War, as President of the Confederate States of America. Jeff Davis County is easily recognizable for its unique shape; it is a pentagon which has no north-south nor east-west boundaries, save for a six mile line serving as its southern boundary. it also is the "only" county in the United States that touches a foreign country (Mexico) at a single point. Jeff Davis is also one of the nine counties that compose the Trans-Pecos region of West Texas.
Document 9: Provisional Congress of the Confederate States: The Provisional Congress of the Confederate States, also known as the Provisional Congress of the Confederate States of America, was a congress of deputies and delegates called together from the Southern States which became the governing body of the Provisional Government of the Confederate States of America (CSA) from February 4, 1861, to February 17, 1862. It sat in Montgomery, Alabama, until May 20, 1861, when it adjourned to meet in Richmond, Virginia, on July 20, 1861. It added new members as other states seceded and directed the election on November 6, 1861, at which a permanent government was elected.
Document 10: Beauvoir (Biloxi, Mississippi): The Beauvoir estate is notable as the historic post-war home (1876-1889) of the former President of the Confederate States of America, Jefferson Davis, (1807/08-1889), (who was also former U.S. Representative, (1845-1846), and more influentially as United States Senator from Mississippi, (1847-1851, 1857-1861) and in between U.S. Secretary of War, (1853-1857), under 14th President Franklin Pierce). Its construction was begun in 1848 facing the Gulf Coastline (Gulf of Mexico) at Biloxi, Mississippi. It was purchased earlier in 1873 by the planter Samuel Dorsey and his wife Sarah Dorsey. After her husband's death in 1875, the widow, Sarah Ellis Dorsey learned of former Confederate President Jefferson Davis' difficulties. She invited him to visit at the plantation and offered him a cottage near the main house, where he could live and work at his memoirs (""Rise and Fall of the Confederate Government""). He ended up living there the rest of his life. The house and plantation have since been designated as a National Historic Landmark, recognized and listed by the U.S. Department of the Interior and its National Park Service (established 1916).
Document 11: 1860 Democratic National Conventions: The three 1860 Democratic National Conventions were crucial events in the lead-up to the American Civil War. The first Democratic national convention adjourned in deadlock without choosing candidates for President and Vice President. A second official convention nominated Senator Stephen A. Douglas of Illinois for President and former Senator Herschel V. Johnson of Georgia for Vice President. A third, “rump,” convention, primarily Southerners, nominated Vice President John C. Breckinridge for President and Senator Joseph Lane of Oregon for Vice President.
Document 12: USRC Jefferson Davis (1853): USRC "Jefferson Davis" was a United States Revenue Cutter Service topsail schooner of the "Cushing" class built in 1853. She was named for Jefferson Davis, then United States Secretary of War under President Franklin Pierce, and later president of the Confederate States of America.
Document 13: Confederate States Secretary of War: Confederate President Jefferson Davis was twenty-third Secretary of War of the United States, serving under U.S. President Franklin Pierce from March 7, 1853 until March 4, 1857. However, he never served in this capacity in the Confederate States.
Document 14: Jefferson Davis Parish, Louisiana: Jefferson Davis Parish (French: "Paroisse de Jefferson Davis" ) is a parish located in the U.S. state of Louisiana. As of the 2010 census, the population was 31,594. The parish seat is Jennings. Jefferson Davis Parish is named after the president of the Confederacy during the American Civil War, Jefferson Davis. It is located in southwestern Louisiana and forms a part of the Acadiana region.
Document 15: Outline of the American Civil War: American Civil War – civil war in the United States of America that lasted from 1861 to 1865. Eleven Southern slave states declared their secession from the United States and formed the Confederate States of America, also known as "the Confederacy." Led by Jefferson Davis, the Confederacy fought against the United States (the Union), which was supported by all the free states (where slavery had been abolished) and by five slave states that became known as the border states.
ground_truth: Jefferson Davis