During the rough-and-tumble world of frontier Indiana politics, two men stood head and shoulders above their contemporaries. William Henry Harrison, the hero of the Battle of Tippecanoe, governor of the Indiana Territory, and then the ninth president of the United States. Jonathan Jennings stood as Harrison's biggest rival, leading the fight to keep slavery out of the Hoosier State. History, however, has not been kind to Jennings, who became Indiana's first governor and served four terms in Congress. In this fourth volume of the Indiana Historical Society Press's Indiana Biography Series, Randy K. Mills has produced a groundbreaking look at Jennings, one of the nineteenth state's most complex and fascinating figures.