Lexington was an 18th-century plantation on Mason's Neck in Fairfax County, Virginia, United States. The estate belonged to several generations of the Mason family, and is now part of Mason Neck State Park. Lexington was originally part of the Gunston Hall plantation land tract, held by various members of the Mason family (one of the First Families of Virginia) for generations, and previously by members of the Doeg band of Native Americans. George Mason IV, an active patriot and mentor of his neighbor General (then President) George Washington subdivided his property when his firstborn son George Mason V (1753-1796) reached legal age in 1774 (a year after his mother's death). The house was actually built beginning circa 1784, a year after that somewhat sickly son returned from a European trip taken for health and business reasons, and shortly before the son's marriage to Elizabeth Barnes Hooe, whose father operated the Barnesfield plantation in nearby King George County. Lexington's construction of wood rather than brick or stone like Gunston Hall, may indicate the economic constraints imposed by the American Revolutionary War upon the patriot family. Although they had six children (and documents confirm at least three were born at this plantation house), George Mason V would only acquire title to the plantation upon his father's death in 1792 (when the Fairfax County Circuit Court accepted and transcribed his father's lengthy and codicil-free will written in 1773 and named him the estate's executor) and only survived his father by four years. The name commemorates the Battle of Lexington in Massachusetts. The surrounding plantation was used to grow tobacco (a resource intensive crop and which led to soil depletion) and other crops by 1775. It fell into disrepair after the War of 1812, both because of soil depletion, and because George Mason V's son sold the property to his uncle William Mason of Mattawoman plantation in Maryland in 1818 (a year before his wife died and two years before his own death). William Mason had run the plantation during his elder brother George Mason V's European trip before the manor house's construction. Non-family managers had operated the Lexington plantation on behalf of the Mason descendants until they came of age, later on behalf of Mason family members who chose to live elsewhere. George Mason V's will declared that Lexington would become the property of his second son, William Eilbeck Mason (1788-1820), when he