Clemence, the Schoolmistress of Waveland — William Wells Brown

According to Wikipedia: William Wells Brown (November 6, 1816 - November 6, 1884) was a prominent abolitionist lecturer, novelist, playwright, and historian. Born into slavery in the Southern United States, Brown escaped to the North, where he worked for abolitionist causes and was a prolific writer. Brown was a pioneer in several different literary genres, including travel writing, fiction, and drama, and wrote what is considered to be the first novel by an African American. An almost exact contemporary of Frederick Douglass, Wells Brown was overshadowed by Douglass and the two feuded publicly.