Researching George Mason

Mason was born in 1725, most likely in what is now Fairfax County, Virginia. His father died when he was young and his mother managed the family estates until he came of age. He married in 1750, built Gunston Hall and lived the life of a country squire, supervising his lands, family and slaves. He briefly served in the House of Burgesses and involved himself in community affairs, sometimes serving with his neighbor George Washington. As tensions grew between Great Britain and the North American colonies, Mason came to support the colonial side, using his knowledge and experience to help the revolutionary cause, finding ways to work around the Stamp Act of 1765 and serving in the pro-independence Fourth Virginia Convention in 1775 and the Fifth Virginia Convention in 1776.

Mason prepared the first draft of the Virginia Declaration of Rights in 1776, and his words formed much of the text adopted by the final Revolutionary Virginia Convention. He also wrote a constitution for the state; Thomas Jefferson and others sought to have the convention adopt their ideas, but they found that Mason's version could not be stopped. During the American Revolutionary War, Mason was a member of the powerful House of Delegates of the Virginia General Assembly but, to the irritation of Washington and others, he refused to serve in the Continental Congress in Philadelphia, citing health and family commitments.

In 1787, Mason was named one of his state's delegates to the Constitutional Convention and traveled to Philadelphia, his only lengthy trip outside Virginia. Many clauses in the Constitution bear his stamp, as he was active in the convention for months before deciding that he could not sign it. He cited the lack of a bill of rights most prominently in his Objections. He also wanted an immediate end to the slave trade, and a supermajority requirement for navigation acts, fearing that restrictions on shipping might harm Virginia. He failed to attain these objectives, and again at the Virginia Ratifying Convention of 1788, but his prominent fight for a bill of rights led fellow Virginian James Madison to introduce the same during the First Congress in 1789; these amendments were ratified in 1791, a year before Mason died. Obscure after his death, Mason has come to be recognized in the 20th and 21st centuries for his contributions to the early United States and to Virginia.

Mason joined the Fairfax County Independent Militia in 1775 and was elected Ensign. He developed a rheumatic disorder that plagued him for the remainder of his life. In 1776, he commanded a militia company sent to Hampton, Virginia to protect the coast from Lord Dunmore's assaults, but was forced to quit the military on account of his increasingly poor health. He travelled to France between 1779 and 1783 for business purposes and to improve his health. At his father's request, George Washington wrote Mason letters of introduction to the marquis de Lafayette and Benjamin Franklin in Paris. While in France, he settled in Nantes, where he became involved in the tobacco trade and occasionally arranged for shipments of goods to his father.

Upon the death of his father in 1792, Mason inherited the entirety of Mason's Neck. He died four years later at Lexington, on December 5, 1796, after suffering from chronic ill health for his entire adult life. He was interred in the Mason family graveyard at Gunston Hall. In 1803, his widow Betsey married George Graham, a nephew of George Mason's second wife, Sarah Brent, who had lived at Gunston Hall and been educated with this Mason's two youngest brothers before completing his education at Columbia University and becoming a lawyer and government official as well as planter.

His will divided Mason's Neck into two approximately equal tracts along a north–south axis from Causeway Point to Martin Cockburn's south boundary line. His eldest son George Mason VI received the eastern tract with the ownership privilege of either Lexington or Gunston Hall, of which he chose the latter. Another of his sons, William Eilbeck Mason, received the western half of the Neck.