James Warren (September 28, 1726 – November 28, 1808) was the President of the Massachusetts Provincial Congress and a Paymaster General of the Continental Army during the American Revolutionary War, among other positions. He is also famous as the husband of Mercy Otis Warren and for his outspoken courage as an Anti-Federalist. General James Warren is sometimes confused with the two other Massachusetts Revolutionaries, the brothers Joseph Warren and John Warren, but they were not at all closely related, merely had similar names and views.
James Warren was born, raised and died in Plymouth, Massachusetts. He was descended from Mayflower passengers Richard Warren and Edward Doty. Warren graduated from Harvard in 1745, and in 1747 succeeded his father as sheriff of Plymouth County, Massachusetts.
In 1754 Warren married his second cousin Mercy Otis Warren, who like him was also descended from Edward Doty. The couple had five sons: James (1757–1821), Winslow (1759–1791), Charles (1762–1784), Henry (1764–1828), and George (1766–1800). Mercy Warren was the daughter of James Otis and sister of Warren's firebrand lawyer friend James Otis, Jr., as well as a historian, poet and playwright. She hosted political meetings in their home, and also became known for her correspondence, including with Abigail Adams, John Adams and Catherine Macauley. With her husband's support Mercy Warren, published at least two political plays, The Adulateur (in 1772) and The after the war, a volume of poetry (in 1790) and History of the American Revolution (in 1805).