Background
Mason was born on 15 March 1765 at Chopawamsic in Stafford County, Virginia. He was the third child and youngest son of Thomson Mason and his wife Mary King Barnes.
Mason was born on 15 March 1765 at Chopawamsic in Stafford County, Virginia. He was the third child and youngest son of Thomson Mason and his wife Mary King Barnes.
Mason ran for one of Maryland"s seats in the United States Senate, but lost. He then served as Attorney General of Maryland in 1806. Mason died on 10 December 1824 at the age of 59.
Mason was interred at his Montpelier estate in Clear Spring, Maryland.