Orson Welles was 17 in Twelfth Night when he played an uncredited character.
That was over 91 years ago in 1933.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 1985 he died aged 70, starring in 241 films in his career, 237 of those after Twelfth Night was first released. If he were alive today he would be 109.
In Twelfth Night, I think Orson Welles looks: