Marshall, city, seat of Harrison County, eastern Texas; incorporated as a city 1841. It is an industrial center situated in an agricultural and petroleum-producing region; major manufactures include chemicals, processed lignite, plastic and metal products, building materials, clothing, and stoneware. Marshall is the site of Wiley College (1873) and East Texas Baptist University (1912). Points of interest include the Michelson Museum of Art, the Harrison County Historical Museum, and the Ginocchio National Historic District. The community, settled in the mid-19th century, is named for Chief Justice John Marshall. During the American Civil War it served for a time as the capital of Missouri. Population 24,921 (1980); 23,682 (1990); 23,935 (2000).