James Mooney,
The Ghost-dance religion and the Sioux outbreak of 1890
“ They are commonly known as northern Arapaho, to distinguish them from the other large division living now in Oklahoma. The Kiowa distinguished them as Tägyä′ko, “sagebrush people,” a translation of their proper name, Baachinĕna. Although not the largest division, the Baachinĕna claim to be the “mother people” of the Arapaho, and have in their keeping the grand medicine of the tribe, the sĕicha or sacred pipe. ”
