Armistead Thomson Mason, the son of Stevens Thomson Mason, was a United States. Senator from Virginia from 1816 to 1817.
Background
He was born at Armisteads in Louisa County, Virginia, graduated from the College of William and Mary in 1807 and engaged in agricultural pursuits until he became colonel of Virginia Volunteers in the War of 1812 and subsequently brigadier general of Virginia Militia.
Education
Graduated from College William and Mary, 1807.
Career
Mason was also the youngest person to ever serve in the United States Senate at the age of 28 and 5 months even though the age of requirement for the United States Senate in the constitution is 30 years old. He was elected as a Republican to the United States Senate to fill the vacancy caused by the resignation of William Branch Giles, despite being constitutionally underage for the office. Mason served from January 3, 1816, to March 4, 1817.
He then moved to Loudoun County, Virginia where he was an unsuccessful candidate for election to the Fifteenth Congress (1817).
Membership
Member United States Senate from Virginia (Democrat), January 3, 1816-1817.