That was over 31 years ago in 1990.
Today he is 71, and has starred in 86 movies in total, 67 since Miller's Crossing was released.
In Miller's Crossing, I think Gabriel Byrne looks:
Miller's Crossing scores 7.5 out of 10 on The Movie Database.
Gabriel Byrne's first acting role was as 'Uther Pendragon' in Excalibur, released in 1981 when he was 30.