Complex sentence: Smith had approached the Staley family prior and after the death of Enoch in 1995, but the family declined to sell to him because Enoch had distrusted Smith and instructed them to never sell the track to him.
Split into simpler sentences: Smith had approached the Staley family prior to and after the death of Enoch in 1995. The family declined to sell to him because Enoch had distrusted Smith and had instructed the family never to sell the track to him.