George Mason IV (December 11, 1725 - October 7, 1792) was an American patriot, statesman, and delegate from Virginia to the U.S. Constitutional Convention. Along with James Madison, he is called the "Father of the Bill of Rights. " For these reasons he is considered one of the "Founding Fathers" of the United States. Like anti-federalist Patrick Henry, Mason was a leader of those who pressed for the addition of explicit States rights and individual rights to the U.S.