Jonathan Rhys Meyers was 16 in A Man of No Importance when he played the character 'First Young Man'.
That was over 29 years ago in 1994.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 46, and has starred in 58 movies in total, 56 of those since A Man of No Importance was released.
In A Man of No Importance, I think Jonathan Rhys Meyers looks: