The Mason family of Virginia is a historically significant American political family of English origin, whose prominent members are known for their accomplishments in politics, business, and the military. The progenitor of the Mason family, George Mason I (5 June 1629–1686), arrived at Norfolk, Virginia on the ship Assurance in 1652. Mason was a Cavalier member of the Parliament of England during the reign of Charles I of England. George Mason I's great-grandson was George Mason IV (11 December 1725–7 October 1792), an American patriot, statesman, and delegate from Virginia to the U.S. Constitutional Convention. Along with James Madison, George Mason IV is known as the "Father of the Bill of Rights." For these reasons, Mason is considered one of the "Founding Fathers" of the United States