[3] President Thomas Jefferson chose William Henry Harrison as the governor of the territory, and Vincennes was established as the capital.Starting in 1794, Native American titles to Indiana lands were extinguished by usurpation, purchase, or war and treaty.This included the future Decatur County, which was authorized by the state legislature on December 12, 1821.[6] The low rolling hills are devoted to agriculture or urban development, with only the areas carved by drainages still wooded.[7] The highest point (1,097 feet/334 meters ASL) is a hillock 0.8 miles (1.3 km) SSE from Kingston.The commissioners execute acts legislated by the council, collect revenue, and manage the county government.The judge on the court is elected to a term of four years and must be a member of the Indiana Bar Association.