Can someone tell me the name of this Native American Legend?

There is an old Native American legend of a man and his name started with a C. Some say he was a hunchback, and some say he was always bent over from carrying a sack on his bag in which he carried goods to trade with. He would travel from town to town and sleep with the women and trade with the townspeople. Some say he didn't exist and it was a myth. I cannot remember the name of the man. All i know is what i have said here and that his name starts with a C.