I read Buffalo Bill Cody's biography, he fought in the civil war, was anti slavery, got into a hand to hand combat with a Cheyene warrior and killed that man. The article didn't explain the nature of the fight. Otherwise, was a hard working stand up guy. Of course did the wild west show highlighting the wild west. Maybe worked for the pony express, a little fuzzy if he actually did according to the article I read. Not that it really matters actually.
I don't see a pressing need to change the name because of Buffalo Bill Cody