Education
Born at "Mount Pleasant" near Loretto, Virginia, Garnett attended the College of New Jersey. He studied law and was admitted to the bar, commencing practice in Lloyds, Virginia.
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Born at "Mount Pleasant" near Loretto, Virginia, Garnett attended the College of New Jersey. He studied law and was admitted to the bar, commencing practice in Lloyds, Virginia.
He was the brother of James M. Garnett and the first cousin of Charles F. Mercer. He was not a candidate for reelection in 1826 and instead continued to practice law in Lloyds until his death on August 15, 1840 at his estate called "Champlain" in Lloyds. He was interred in the family cemetery on the estate.
Garnett became a member of the Virginia House of Delegates in 1816 and 1817 and was elected to the United States House of Representatives in 1816, serving from 1817 to 1827 as both a Democratic-Republican and a Jacksonian.