Jackson Sundown (1863 – December 18, 1923), born Waaya-Tonah-Toesits-Kahn (meaning Blanket of the Sun),[1] was a Native American rodeo rider who has become a folk-hero for his mythic performance in the 1916 Pendleton Round-Up, largely popularized by Ken Kesey's novel The Last Go 'Round.
He was considered to be a war criminal and lived in hiding with Sitting Bull and others who played a role in the defeat of General George Custer at the Battle of Little Big Horn.
He settled back in Idaho on the Nez Perce Reservation in 1910 and two years later married Cecilia Wapshela, a widow with two children and ranch owner, and they lived at her place at Jacques Spur, near Culdesac.
Jackson Sundown won many all-around cash pots, which takes the highest average scores from all events, though he was best known for bareback and saddle bronc horse riding.
His appearance differed greatly from other rodeo riders as he wore bright colored shirts, large and elegant woolen chaps and tied his long braids under his chin.