One Bull Dakota in 1881. One Bull stood by Sitting Bull at his surrender. One Bull Henry Oscar One Bull (Lakota: "Tȟatȟáŋka Waŋžíla" in Standard Lakota Orthography) (circa 1853-1947) was a Lakota Sioux man best known for being the nephew and adopted son of the holy man, Sitting Bull. He was also the younger brother of White Bull, a famous Lakota warrior and chief contributor to Stanley Vestal's biography of their uncle. He wore his uncle's shield during the Battle of Little Bighorn. One Bull joined his uncle in fleeing to Canada following the Battle of the Little Bighorn in 1876. Sitting
Sitting Bull natives joined him for safety in numbers. His leadership had attracted warriors and families, creating an extensive village estimated at more than 10,000 people. Lt. Col. Custer came across this large camp on June 25, 1876. Sitting Bull did not take a direct military role in the ensuing battle; instead he acted as a spiritual leader. A week prior to the attack, he had performed the Sun Dance, in which he fasted and sacrificed over 100 pieces of flesh from his arms. Custer's 7th Cavalry advance party attacked Cheyenne and Lakota tribes at their camp on the Little Big Horn