William Gilmore Simms (April 17, 1806 – June 11, 1870) was an American writer and politician from the American South who was a "staunch defender" of slavery. A poet, novelist, and historian, his History of South Carolina served as the definitive textbook on state history for much of the 20th century. Literary scholars consider him a major force in antebellum Southern literature; in 1845 Edgar Allan Poe pronounced him the best novelist America had ever produced. Throughout much of his literary career he served as editor of several journals and newspapers. He also served in the South Carolina House of Representatives from 1844–1846.