Richard Farnsworth was 16 in The Adventures of Marco Polo when he played the character 'Mongol Warrior (uncredited)'.
That was over 86 years ago in 1938.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 2000 he died aged 80, starring in 62 films in his career, 61 of those after The Adventures of Marco Polo was first released. If he were alive today he would be 103.
In The Adventures of Marco Polo, I think Richard Farnsworth looks: