I'm writing a gaslight fantasy set in the 1880's, and one of my characters was adopted as a toddler/pre-schooler by a Native American tribe during the 1860's; he was primarily raised by the tribe's shaman, who taught him how to use an unusual magical talent. The character is from Iowa in the original fandom, so I thought I should stick to it if possible... but I can't figure out what tribe that would be!
I've googled Native American tribes and Iowa history, and found that a number of tribes were around... but the stuff I've come across seems to all be around the Great Lakes, and I was hoping for something around the Plains area.
Also A) this character is white; if the tribe historically did things like torture captives, that crosses them off the list. B) the Trail of Tears (1830's) hasn't happened, or only on a much smaller scale, due to the Native Americans possessing powerful earth magic; while the tribal lands have shrunken considerably, most of the tribes are still wherever their ancestral lands are. C) I'd really like a tribe that still has at least records of their language available, because I'd like the character to use some phrases (mostly endearments and swear words!) with his magically bonded partner.