Jon Gries was 9 in Will Penny when he played the character 'Horace'.
That was over 56 years ago in 1967.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 66, and has starred in 81 movies in total, 79 of those since Will Penny was released.
In Will Penny, I think Jon Gries looks: