Prairie du Chien treaty. In 1833, likely due to the declining fur trade and development opportunities, Caldwell began selling off his land by contracting with the land speculator Arthur Bronson from New York. According to his land patent, to be legally binding, each deed had to have a president's endorsed signature upon it. All unsold parcels were to be reserved for Caldwell's heirs forever, in trust with the US Bureau of Indian Affairs. The land patent was not completed until 1839, and the deeds did not gain a president's signature until 1841, after Caldwell and his band had left the area for the West. In all, six land sales took place from Caldwell's Reserve. These land transactions included: 80 acres to George W. Dole and Richard Hamilton in June 1833 for $100; 160 acres to Richard Nicolas, Sarah Amantus, Eleanor Hamilton, and infant heirs of Richard Jo and Diana W. Hamilton in July 1833 for $200; 160 acres to Philo Carpenter in July 1833 for $200; 720 acres to Arthur Bronson in 1833 for $900; 160 acres to Captain Seth Johnson in November 1833 for $200; 80 and 160 acres, respectively, to Julius B. Kingsbury in November 1834 for $300. To date, the Northern 80 acres of Caldwell's Reserve were never legally conveyed for sale with a president's signature of approval. They are included within the Cook County Forest Preserve and Wildwood community of Chicago. Marriage and family Caldwell married La Natte about 1804, who died after the birth of their first child, Alexander. She was the niece of the powerful Potowatomi chief, Mad Sturgeon. Alexander died in 1832 in his twenties from alcoholism. Caldwell married again, but his second wife also died within a year after the birth of their first child. Before leaving the Chicago area, Caldwell married a third time, on November 18, 1834. His bride was Saqua (also called Masaqua) LeGrand, a Métis woman of Potawatomi and French descent. They had a daughter and son born after they migrated west. Only the son, Pe-y-mo, survived to adulthood. Later in the nineteenth century, Pe-y-mo entered the historical records when trying to sell the last 80 acres of Caldwell's Reserve in Chicago. Indian removal In 1835, Caldwell and his band of Potawatomi left the State of Illinois and relocated in Platte County, Missouri. In 1836, as a result of the Platte Purchase, Caldwell and his band were removed