Sitting Bull was a Hunkpapa Lakota chief and holy man. He is notable in American and Native American history in large part for his major victory at the Battle of Little Big Horn against Custer’s 7th Cavalry, where his premonition of defeating them became reality. Even today, his name is synonymous with Native American culture, and he is considered to be one of the most famous Native Americans in history. Wikipedia
The definitive Wikipedia entry for Sitting Bull. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Sitting_Bull