William Clark By GRhistory Aug 1, 1770 William Clark was born Period: Aug 1, 1770 to Sep 1, 1838 William Clark's Life Jan 1, 1784 Clark moved to Louisville, Kentucky when he was 14. (only the year is correct.) Jan 1, 1789 Joined the Militia to fight the Native Americans. (month and day are not exact) Jan 1, 1792 3 years later, Clark joined the army and became an officer. (only the year is correct) Jan 1, 1803 Lewis invited Clark to come with him on the expedition across the Louisiana Purchase. (only the year is correct.) Jan 1, 1813 After the expedition in 1813, Clark became the governor of the Missouri Territory. (only the year is correct.) Jan 1, 1820 Missouri then became a state in 1820. Clark unsuccessfully ran for governor. (only the year is correct.) Jan 1, 1822 Clark became Superintendant of Indian Affairs from 1822 to death. (only the year is correct.) Sep 1, 1838 William Clark dies.