Complex sentence: In his adolescence, Dean sought the counsel and friendship of a local Methodist pastor, the Rev. James DeWeerd, who seemed to have had a formative influence upon Dean, especially upon his future interests in bullfighting, car racing, and theater.
Split into simpler sentences: In his adolescence, Dean sought the counsel and friendship of a local Methodist pastor, the Rev. James DeWeerd. DeWeerd seemed to have had a formative influence upon Dean, especially upon his future interests in bullfighting, car racing, and theater.