P. B. S. Pinchback

Pinckney Benton Stewart Pinchback (born Pinckney Benton Stewart May 10, 1837 – December 21, 1921) was an American publisher and politician, a Union Army officer, and the first person of African descent to become governor of a U.S. state. He was born free in Georgia. A Republican, Pinchback served as the 24th Governor of Louisiana for 15 days, from December 29, 1872, to January 13, 1873. He was later elected to the state legislature, serving in 1879-1880.