On October 14, 1863 John Buford's 1st Division, Cavalry Corps remained in Brentsville to protect elements of the wagon train for the Army of the Potomac on its retreat to Centreville.
From 1822 to 1893 Brentsville served as the county seat for Prince William County. A thriving community before the war, destruction by soldiers from both sides devastated the community. After the war, Brentsville was able to combat calls to move the county seat to Manassas. By 1893 however, the pressure was too much and the seat moved where it is today. Brentsville quickly faded into a rural community.
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