Brian Dennehy was 46 in Silverado when he played the character 'Cobb'.
That was over 38 years ago in 1985.
In 2020 he died aged 81, starring in 133 films in his career, 102 of those after Silverado was first released. If he were alive today he would be 85.
In Silverado, I think Brian Dennehy looks: