Fairfax County / Prince William County
Fairfax County. Area 417 square miles. Formed in 1742 from Price William and Loudoun, and named for Lord Fairfax, Proprietor of the Northern Neck. Mount Vernon, George Washington's home, is in this county.
Prince William County Area 345 square miles. Formed in 1730 from Stafford and King George, and named for William Augustus, Duke or Cumberland, second son of King George II. The first and second battles of Manassas took place in this County.
Marker is on Lee Highway (U.S. 29) west of Bull Run Post Office Road (County Route 609), on the right when traveling west.
Courtesy hmdb.org
