People of a different language
Chyann is a modern phonetic spelling variant of Cheyenne. The name is derived from the Dakota Sioux word 'shaiyena', which was used to describe the Algonquian-speaking tribe because their language was unintelligible to the Sioux.
Less common today
Chyann isn't in the latest US Top 1000. It last peaked at #2,555 in 1999.
US births per 5-year period, 1990βpresent (SSA data).