Mercy Otis Warren (September 14, [September 25, New Style] 1728 – October 19, 1814) was an American activist poet, playwright, and pamphleteer during the American Revolution. During the years before the Revolution, she had published poems and plays that attacked royal authority in Massachusetts and urged colonists to resist British infringements on colonial rights and liberties. She was married to James Warren, who was likewise heavily active in the independence movement.