Native Americans Already Deists?

Native American religion was complex, mostly because it didn't exist as a cohesive whole but instead was a series of oral traditions held by different groups and individuals. Shamans or 'medicine men' were the closest thing most Amerindian groups had to priests, although they derived their spiritual authority from communal acceptance rather than from some kind of priestly class (more or less). 
Lewis and Clark were the first to encounter some tribes of Native peoples, and they reported stories of Amerindian religious belief in a 'Great Spirit' or 'Great Grandfather.' In one encounter, they remarked how Natives believed that this Grandfather decided people's fate and seemed to control the events of the world.
-http://www.native-languages.org/creator.htm
Category:Deist Topics