While based off the 1968 Charles Portis-written novel of the same name, the 2010 film True Grit is actually the second adaptation of the novel, following the 1969 film starring John Wayne (Who won an Oscar for his role as Deputy U.S. Marshal Rooster Cogburn). Ahead of shooting for the 2010 version though, Ethan Coen commented how it was different, particularly in that it was more faithful to the novel:
It's partly a question of point-of-view. The book is entirely in the voice of the 14-year-old girl. That sort of tips the feeling of it over a certain way. I think [the book is] much funnier than the movie was so I think, unfortunately, they lost a lot of humor in both the situations and in her voice. It also ends differently than the movie did. You see the main character – the little girl – 25 years later when she's an adult. Another way in which it's a little bit different from the movie – and maybe this is just because of the time the movie was made – is that it's a lot tougher and more violent than the movie reflects. Which is part of what's interesting about it.
The film was equally well-received and went on to be nominated for ten Academy Awards, winning none. But that sort of fit the major difference between the 1969 film and the 2010 film. Sometimes, you don't get the victory you hope for and that's just part of life. Stay tuned!