George Mason (December 11, 1725 [O.S. November 30, 1725] – October 7, 1792) was an American planter, politician, Founding Father, and delegate to the U.S. Constitutional Convention in Philadelphia in 1787, one of three delegates who refused to sign the Constitution. His writings, including substantial portions of the Fairfax Resolves of 1774, the Virginia Declaration of Rights of 1776, and his Objections to this Constitution of Government (1787) opposing ratification, have exercised a significant influence on American political thought and events. The Virginia Declaration of Rights, which Mason principally authored, served as a basis for the United States Bill of Rights, of which he has been deemed a father.
Mason was born in 1725 in present-day Fairfax County, Virginia. His father drowned while crossing the Potomac River in 1735 when Mason was nine years old. His mother managed the family estates until he came of age. Mason married in 1750, built Gunston Hall, and lived the life of a country squire, supervising his lands, family, and slaves.