Influential headmen for these groups included: Yanktonai--Two Bears and Black Eyes; Cut Heads--All Over Black; Blackfeet--The Grass; Hunkpapa--Sitting Bull, Four Horn, Iron Dog, Slave, Little Knife, Gall, Rain-in-the-Face, and Red Horn.
Today the Standing Rock Reservation is located in both North and South Dakota. Its’ 562,366 acre land base is mainly found in Corson County in South Dakota. A monument to Sitting Bull is located at his grave in the southeast corner of the reservation. Contemporary scholars Patricia Locke (educator) and Beatrice Medicine (anthropologist) are from the Standing Rock Reservation.