Philip Henson (December 28, 1827 - January 10, 1911) was a scout and spy for the Union Army during the American Civil War. Upon the election of U.S. Grant to the U.S. Presidency (1869–1877), Henson became the first Special Secret Service Agent of the United States of America, serving until Grant's death in 1885. During the course of his life and careers, Phillip Henson would interact with such famous 19th century persons as abolitionist John Brown, Cherokee Chiefs John Ross a.k.a. Kooweskoowe and Stand Watie a.k.a. Degataga, Tennessee and Texas Governor Sam Houston, actor John Wilkes Booth, Confederate Postmaster General John Henninger Reagan, Confederate Secretary of State Judah Philip Benjamin, U.S. Congressman from Illinois Elihu Benjamin Washburne, Union General and Transcontinental Ra