Westmoreland County/Northumberland County
Historical highway marker Z-4 · Westmoreland County
Westmoreland County Formed in 1653 from Northumberland and King George, and named for an English county. In it were born George Washington, James Monroe, and Robert E. Lee. Northumberland County Originally an Indian district called Chickacoan. In 1648 it became Northumberland County, named for an English county. The mouth of the Potomac River is here.
Conservation & Development Commission, 1928