Sitting Bull did not agree to the treaty. He told the Jesuit missionary, Pierre Jean De Smet, who sought him out on behalf of the government: "I wish all to know that I do not propose to sell any part of my country." He continued his hit-and-run attacks on forts in the upper Missouri area throughout the late 1860s and early 1870s. The events of 1866–1868 mark a historically debated period of Sitting Bull's life. According to historian Stanley Vestal, who conducted interviews with surviving Hunkpapa in 1930, Sitting Bull was made "Supreme Chief of the whole Sioux Nation" at this time.
Sitting Bull who counted twelve people in the Hunkpapa leader's immediate family. Forty-one families, totaling 195 people, were recorded in Sitting Bull's band. The military decided to transfer Sitting Bull and his band to Fort Randall, to be held as prisoners of war. Loaded onto a steamboat, the band of 172 people was sent down the Missouri River to Fort Randall (near present-day Pickstown, South Dakota) on the southern border of the state. There they spent the next 20 months. They were allowed to return north to the Standing Rock Agency in May 1883. In 1883, rumors were reported that Sitting Bull