
1) Forces who fought Custer 2) Great Plains people
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https://www.crosswordclues.com/clue/cheyennes

• (n. pl.) A warlike tribe of indians, related to the blackfeet, formerly inhabiting the region of Wyoming, but now mostly on reservations in the Indian Territory. They are noted for their horsemanship.
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http://thinkexist.com/dictionary/meaning/cheyennes/
Chey·ennes' noun plural ;
sing. cheyenne .
(Ethnol.) A warlike tribe of indians, related to the blackfeet, formerly inhabiting the region of Wyoming, but now mostly on reservations in the Indian Territory. They are noted for their horsemanship.
Found on
http://www.encyclo.co.uk/webster/C/63
No exact match found.