The film, celebrated for its unforgettable characters and gripping narrative, showcased the immense talents of stars like John Wayne, who portrayed Rooster Cogburn. Wayne, whose on-screen bravado belied his tumultuous personal life, succumbed to stomach cancer in 1979 at the age of 72. His tragic demise was not an isolated incident, as many of his co-stars faced similarly heartbreaking fates. Jeremy Slate, known for his role as the untrustworthy Emtt Quincy, battled alcoholism and passed away in 2006. Glenn Campbell, the beloved country music star turned actor, lost his battle with Alzheimer’s in 2017, leaving behind a legacy marred by substance abuse struggles.