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

Context paragraphs:
Franklin Pierce University: Franklin Pierce University is a small, private, non-profit, regionally accredited university in rural Rindge, New Hampshire, in the United States.  It was founded as Franklin Pierce College in 1962, combining a liberal arts foundation with coursework for professional preparation.  The institutional mission focuses on preparing citizens and leaders of conscience for a new century who make significant contributions to their professions and communities, whether their aspirations are global or local.  The school gained university status in 2007 and is accredited by the New England Association of Schools and Colleges (NEASC).  In 2009, Franklin Pierce University was ranked on "Forbes List of America's Top Colleges".  The university has an enrollment of 1,399 students and overlooks Pearly Pond, just a few miles from Mount Monadnock.  The campus covers approximately 1200 acre .  Kim Mooney is the current president of Franklin Pierce University, replacing outgoing president Andrew Card in August 2016.  The university also operates the College of Graduate and Professional Studies with campuses in Manchester, Portsmouth, and Lebanon, New Hampshire, as well as Goodyear, Arizona.  The College at Rindge houses three institutes: the Marlin Fitzwater Center for Communication, named for Marlin Fitzwater; the Monadnock Institute of Nature, Place, and Culture; and the New England Center for Civic Life.

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.

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).

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.

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.

Confederate States War Department: The Confederate States War Department was a cabinet-level department in Confederate States of America government responsible for the administration of the affairs of the Confederate States Army.  The War Department was led by the Confederate States Secretary of War.  During its existence, the War Department was the largest department of the Civil Service in Confederate States of America.

Confederate States Department of the Treasury: The Confederate States Department of the Treasury was the department of the executive branch of the Confederate States of America responsible for the administration of the economic affairs of the Confederacy.  These affairs including the issuing of debt, the collecting of taxes, the printing of money, and the administration of customs The Department of the Treasury was led by the Secretary of the Treasury, a position which was established in legislation passed by the Provisional Confederate Congress in 1861.

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.

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.

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.

Supporting paragraphs: Confederate States presidential election, 1861 Jefferson Davis
Answer: Jefferson Davis