[1] Barbour was born on August 10, 1866, at Beauregard in Brandy Station, Culpeper County, Virginia.
His lawyer father James Barbour, had continued the family's political involvement, as well as served as a major in the Confederate States Army during the American Civil War.
[3] At the convention on May 29, 1902, Barbour voted to proclaim the new constitution in effect without submitting it to the voters for ratification.
The firm's clients included the Potomac Electric Power Company and the Washington Railway & Electric Co. Barbour also tended a dairy herd at his Fairfax County estate and founded the Maryland and Virginia Milk Producers Association.
[4] One of the last surviving members of the 1902 Virginia Constitutional Convention, Barbour died after a long illness at Doctors Hospital in Washington, D.C., on May 6, 1952.