Marlon Brando was 46 in The Godfather when he played the character 'Don Vito Corleone'.
That was over 51 years ago in 1972.
In 2004 he died aged 80, starring in 97 films in his career, 67 of those after The Godfather was first released. If he were alive today he would be 98.
In The Godfather, I think Marlon Brando looks: