Apparently not.
Emmett Quincy (the guy with Moon in the cabin) was played by Paul Rae
I believe that horse from the movie True Grit was Wayne's personal horse.
John Wayne won the Academy Award (Oscar)for Best Actor in a Leading Role for: True Grit (1969)The other nominees wereDustin Hoffman - Midnight CowboyJon Voight - Midnight CowboyRichard Burton - Anne of the Thousand DaysPeter O'Toole - Goodbye Mr. Chips
John Wayne won Best Actor for his portrayal of Marshall Rooster Cogburn.
Kim Darby.
John Wayne is known for films The Searchers and True Grit.