Montpelier is a late 18th-century Federal-style mansion in Clear Spring in Washington County, Maryland, United States.
[1] Montpelier was the residence of John Thomson Mason (15 March 1765–10 December 1824),[2][3] a prominent American jurist and Attorney General of Maryland in 1806.
[4] Montpelier is a two-story brick mansion built around 1770 by Colonel Richard Barnes.
[1] In 1800, Colonel Richard and John Barnes were the largest slaveholders in Washington County with 89 enslaved people.
[1] President Thomas Jefferson visited Montpelier to urge Mason to accept an appointment as United States Attorney General.