Wa-Kon-Kon-Wa-La-Son-Me ( Umapine ) Chief of the Cayuse Nation In 1909, not far from the Crow reservation, in Montana, the Chiefs of many Indian Nations held what was called the Last Great Council of Chiefs. One of the attendees was: Wa-Kon-Kon-Wa-La-Son-Me, who was also called in English: Umapine, Chief of the Cayuse Nation, what is…