William Henry Trescot

William Henry Trescot (November 10, 1822 – May 4, 1898) was a Charleston lawyer, historian, and diplomat born in Charleston, South Carolina, on November 10, 1822. He graduated at College of Charleston in 1840, studied law at Harvard University, and was admitted to the bar in 1843.

He was a close student of American foreign policy. From 1852 to 1854 he was secretary of the U.S. legation in London. In June 1860 he was appointed Assistant Secretary of State, and he was Acting Secretary of State in June–October, during General Lewis Cass's absence from Washington, and for a few days in December after Cass's resignation. His position was important, as the only South Carolinian holding anything like official rank, because of his intimacy with President James Buchanan, and his close relations with the secession leaders in South Carolina.

He opposed the reinforcement of Fort Sumter, used his influence to prevent any attack on the fort by South Carolina before the meeting of the state's convention called to consider the question of secession, and became the special agent of South Carolina in Washington after his resignation from his position as United States Assistant Secretary of State in December. When he returned to Charleston in February 1861, he played a leading role in the negotiations surrounding the Charleston forts.

Works The Diplomacy of the Revolution (1852) An American View of the Eastern Question (1854) The Diplomatic History of the Administrations of Washington and Adams (1857) Memorial of the life of J. Johnston Pettigrew: Brigadier General of the Confederate States Army (1870)