The Sioux divisions of Sisseton/Wahpetons, the Yanktonais, and the Teton Hunkpapa are all represented. Among them were two wives and three children of the Hunkpapa Leader Pizi (Gall). The tepees in that area were occupied by the Hunkpapa Sioux. He claimed the Hunkpapa spiritual leader Sitting Bull was the real leader of the movement. Bloody Knife was born to a Hunkpapa Sioux father and an Arikara mother around 1840. The "free bands" of Hunkpapa favored campsites outside the unsold areas. The Hunkpapa who lived in Sitting Bull's camp and relatives fled to the south. Sitting Bull and the Hunkpapa attacked the survey party, which was forced to turn back. Fifteen years later only 315 tipis out of 2,400 were set up in Hunkpapa camps. Hunkpapa warriors led by Chief Gall led the main body of the attack. When smallpox struck in 1837, it hit the Hunkpapa as the northernmost Lakota division.