Here's a wonderful, but all too short, series from Joe Kubert, that ran in just three issues of Showcase in 1969, then returned as a back-up in Hawk, Son Of Tomahawk a couple of years later. It came out just a year before A Man Called Horse, and tells a similar story, as a white boy is raised as an Indian brave.
With a title like I don't belong here...I don't belong there! and bearing in mind the year this came out, it's obvious that Kubert, who wrote and drew, was going for the youth counter-culture demographic.
Just as he did with Tor, Joe is keen to tie his historical hero into the modern day, his ' declaration of intent ' midway through the book basically saying: Hey kids, Firehair is YOU!
But the analogy isn't too forced and, in essence, it's just a rollicking good western. Here's Part 1.