Marion is a city in Grant County , Indiana , United States . The population was 29,948 as of the 2010 census . The city is the county seat of Grant County . It is named for Francis Marion , a Brigadier General from South Carolina in the American Revolutionary War . The city is the home of Indiana Wesleyan University , the largest evangelical Christian university in the Midwest and largest private university in Indiana. Since 2003, former Olympic skater Wayne Seybold has been Marion's mayor. Marion is also noted for being the birthplace of legendary actor James Dean and famed cartoonist Jim Davis , though both were raised in nearby Fairmount . It was also the location of the wedding of actress Julia Roberts and singer Lyle Lovett in 1993.
History The Battle of the Mississinewa was fought in December 1812, just north of the current city of Marion, as an expeditionary force sent by William Henry Harrison against the Miami villages. Today, the battle is reenacted every fall by residents of Grant County and many reenactors and enthusiasts from throughout the United States and Canada during the annual "Mississinewa 1812" festival, the largest War of 1812 reenactment in the United States. Founding When Martin Boots and David Branson each donated 30 acres of land in 1831 for the site of Marion, they chose a location on the left bank of the swift, scenic river which the Miami Indians had named "Mississinewa," meaning "laughing waters." So rapid had been the tide of settlement that it followed by only 19 years the Battle of Mississinewa, 7 miles downstream, where U.S. troops and Indians had fought a bloody, pre-dawn encounter in 1812. With the formation of Grant County in 1831, Marion was established as the county seat and its future was assured. The river provided water supply, power, and drainage and it bequeathed a natural beauty as it flowed at the base of hills that marched away on either side. Along with at least 36 other communities in the U.S.