William Windom was 64 in Uncle Buck when he played the character 'Mr. Hatfield (voice)'.
That was over 35 years ago in 1989.
In 2012 he died aged 88, starring in 71 films in his career, 9 of those after Uncle Buck was first released. If he were alive today he would be 100.
In Uncle Buck, I think William Windom looks: