Historical clue formulations

• Noted Lakota leader — 2018-08-14
• Big name in Dakota history — 2007-11-17
• Oglala Sioux leader — 2006-03-29
• Revered Sioux chief — 1999-11-17
• Little Bighorn victor — 1998-11-11
• Oglala chief at Little Big Horn — 1996-01-24