[1] He received his early education from private tutors at Gunston Hall[1] and was given Lexington plantation on Mason's Neck by his father in 1774.
[1] 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.
[1] At his father's request, George Washington wrote Mason letters of introduction to the Gilbert du Motier, Marquis de Lafayette and Benjamin Franklin in Paris.
[1] 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.
[2] 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.