Daniel Boone, a universal symbol of the American frontier, came to Upper Louisiana, now Missouri, in 1799 at age 65 with his wife Rebecca, who was 60. The Spanish lieutenant governor granted Boone 845 acres nearby on Femme Osage Creek, but he did not settle on that grant, instead making his home with his children. Two of their sons, Daniel Morgan and Nathan, held land in the Femme Osage locality near the present Matson and Defiance in St. Charles County, while their daughter Jemima and her husband Flanders Callaway lived near the present Marthasville in Warren County. Boone served as syndic or judge for the Femme Osage settlements from 1800 to 1804, and near the still-standing Nathan Boone House, five miles from Defiance, is the site of the "Judgement Elm," where he is said to have held court. The trace to the saline in Howard County, where Daniel Morgan and Nathan boiled salt about 1807, became the Boon's Lick Trail. During the War of 1812, Daniel Morgan was a captain and Nathan a major in the Missouri Rangers. Daniel Boone died at the home of his son Nathan in 1820 and was buried beside his wife, Rebecca Bryan Boone, overlooking the Missouri River near Marthasville; in 1845 their bodies were removed to Frankfort, Ky. Gottfried Duden, a German scholar and humanitarian, came to Missouri in 1824 to investigate opportunities for German immigrants on the American frontier. Near the present Dutzow in Warren County was the site of his farm, and Nathan Boone, his neighbor, spent some time showing him the countryside. Duden returned to Germany in 1827 and published a Report portraying Missouri as an ideal place, helping inspire large German immigration to the state. Followers of Duden settled mainly in St. Charles and Warren counties, and many members of the Giessen Society settled in Warren County in 1834. Nearby Warrenton has been the county seat of Warren County since 1835. German Methodist Central Wesleyan College there was chartered in 1864, and Marthasville Seminary was chartered in 1855 as German Evangelical Missouri College.