What were the John Wayne movies about Rooster Cogburn?

John Wayne played Rooster Cogburn in only one movie: "True Grit" (1969).

While he won an Academy Award for Best Actor for his portrayal of the gruff, one-eyed US Marshal, there was a sequel titled "Rooster Cogburn" (1975). However, it was a separate film that paired Wayne with Katharine Hepburn, but it didn't feature the original story or characters from "True Grit".