The Cheyenne are an Indigenous people of the Great Plains. The Cheyenne comprise two Native American tribes, the Só'taeo'o or Só'taétaneo'o (more commonly spelled as Suhtai or Sutaio) and the Tsétsêhéstâhese (also spelled Tsitsistas, ); the tribes merged in the early 19th century. Today, the Cheyenne people are split into two federally recognized nations: the Southern Cheyenne, who are enrolled in... Wikipedia