Theodore Sutton Parvin was an American lawyer, college professor, Iowa government official, and amateur historian.
In 1844, he rendered Iowa an enduring service by cooperating with Enoch W. Eastman and Frederick D. Mills in defeating the Constitution which proposed to deprive the State of the counties of the Missouri slope.
Upon the organization of the United States District Court in 1846, Parvin was appointed clerk, a position he held for ten years.
Parvin served as a schoolteacher in Cincinnati schools for several years;[1] among his pupils there was the painter George Henry Yewell, later to become prominent in Iowa affairs himself.
Parvin's contributions to early Iowa newspapers, legislative journals, and session laws, long out of print, and other rare publications to the State and Historical libraries have been continuous and exceedingly valuable.