Jacob Thompson was the United States Secretary of the Interior, who resigned on the outbreak of the American Civil War and became the Inspector General of the Confederate States Army.
Thompson between 1855 and 1865, by Mathew Brady
President Buchanan and his Cabinet From left to right: Jacob Thompson, Lewis Cass, John B. Floyd, James Buchanan, Howell Cobb, Isaac Toucey, Joseph Holt and Jeremiah S. Black, (c. 1859)