Joseph Warren, was an American Founding Father and physician who was one of the most important figures in the Patriot movement in Boston during the early days of the American Revolution, eventually serving as President of the revolutionary Massachusetts Provincial Congress. Warren drafted the 1774 Suffolk Resolves, was active in the Sons of Liberty, and enlisted Paul Revere and William Dawes on April 18, 1775, to leave Boston and spread the alarm that the British garrison in Boston was setting out to raid the town of Concord and arrest rebel leaders John Hancock and Samuel Adams.