Richard Roxburgh was 25 in The Riddle of the Stinson when he played the character 'John Proud'.
That was over 36 years ago in 1988.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 62, and has starred in 53 movies in total, 50 of those since The Riddle of the Stinson was released.
In The Riddle of the Stinson, I think Richard Roxburgh looks: