Mercy Otis Warren (September 14, [September 25, New Style] 1728 – October 19, 1814) was a political writer and propagandist of the American Revolution.During the years before the American Revolution, Warren 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. During the debate over the United States Constitution in 1788, she issued a pamphlet, Observations on the new Constitution, and on the Federal and State Conventions written under the pseudonym "A Columbian Patriot", that opposed ratification of the document and advocated the inclusion of a Bill of Rights. Observations was long thought to be the work of other writers, most notably Elbridge Gerry. It was not until her descendant, Charles Warren, found a reference to it in a 1787 letter to British historian, Catharine Macaulay, that Warren was accredited authorship. In 1790, she published a collection of poems and plays under her own name, a highly unusual occurrence for a woman at the time. In 1805, she published one of the earliest histories of the American Revolution, a three-volume History of the Rise, Progress, and Termination of the American Revolution, the first history of the American Revolution authored by a woman.