Fred Gwynne was 61 in Pet Sematary when he played the character 'Jud Crandall'.
That was over 35 years ago in 1989.
In 1993 he died aged 67, starring in 38 films in his career, 7 of those after Pet Sematary was first released. If he were alive today he would be 97.
In Pet Sematary, I think Fred Gwynne looks: