 After the Quapaw signed a treaty with the United States in 1824 relinquishing their title to all the lands which they claimed in Arkansas, many other American settlers began to join Bonne on the bluff.In 1829 Thomas Phillips claimed a half section of land where Pine Bluff is located.Jefferson County was established by the Territorial Legislature on November 2, 1829, and began functioning as a county April 19, 1830.