http://www.pcgamer.com/the-cree-led-by-poundmaker-are-coming-to-civilization-6/

Pîhtokahanapiwiyin, better known to the world as Poundmaker—so named for his ability to lure bison into corral-like "pounds," where they could be trapped and slaughtered—will lead the Cree into Civilization 6 as part of the upcoming Rise and Fall expansion. 

Despite his legend as a bison caller, Poundmaker's true power lay in his diplomatic abilities. He helped negotiate treaties with the Canadian government in the late 1800s, and over the years that followed worked to establish and preserve peaceful relations. Sadly, despite his efforts he was caught up in the events of the North-West Rebellion. Following his voluntary surrender—again, in an effort to reduce tensions and avoid unnecessary bloodshed—he was convicted of treason and sentenced to three years in prison. He ultimately served less than one, but the conditions destroyed his health, and he died shortly after his release in 1886.