Richard Harris was 29 in The Guns of Navarone when he played the character 'Squadron Leader Howard Barnsby RAAF'.
That was over 63 years ago in 1961.
In 2002 he died aged 72, starring in 82 films in his career, 76 of those after The Guns of Navarone was first released. If he were alive today he would be 93.
In The Guns of Navarone, I think Richard Harris looks: