Mallary was born in
Cheshire, Connecticut, and graduated from
Middlebury College in 1805. He moved to
Poultney, Vermont, where he studied law and was
admitted to the bar. He began the practice of law in
Castleton, Vermont, in 1807. Mallary married Ruth Stanley Mallary, and they had four children. Mallary was elected trustee of the Rutland County Grammar School in 1807. He was appointed by Governor
Israel Smith as Secretary to the Governor and Council in 1807, he held that position again from 1809 to 1812 and from 1815 to 1819. He served as the State's attorney for Rutland County from 1811 to 1813. In 1816, Mallary moved to Poultney, Vermont. He was defeated for Congress in 1819 because votes for several of the towns were not returned early enough to be counted. As a
Democratic-Republican, Mallary successfully contested the election of
Orsamus C. Merrill to the
Sixteenth Congress. Mallary served six terms in Congress. He was elected as a
Democratic-Republican to the
Seventeenth Congress, reelected as an
Adams-Clay Democratic-Republican to the
Eighteenth Congress, and elected as an
Adams candidate to the
Nineteenth and
Twentieth Congresses. He was reelected as an
Anti-Jacksonian candidate to the
Twenty-first and
Twenty-second Congresses, serving from January 13, 1820, until his death in
Baltimore, Maryland, on April 15, 1831. He served as chairman of the Committee on Manufactures in the Nineteenth through Twenty-first Congresses. ==Death==