Possible Clues:

• Sun Dance participants
• Member of a North American Indian people of the Plains
• North American house with rumoured 50 Cent entree?
• I'm surprised a soldier who jumps back is brave
• A music with a surprise ¿ that's brave
• Native American tribe whose language is called Heenetiit
• Indigenous people of Colorado and Wyoming
• Language in which 'thank you' is 'hohou'
• Aha, a pro! (anag) — a Native American
• Old Henry, a soldier, forced back Amerindian