Brief introduction to show on XERF (Mexico-Del Rio Texas USA border station). Robert Weston Smith, known as Wolfman Jack (January 21, 1938 – July 1, 1995), was an American disc jockey. Famous for his gravelly voice, he credited it for his success, saying, "It's kept meat and potatoes on the table for years for Wolfman and Wolfwoman. A couple of shots of whiskey helps it.BIO Wolfman_Jack (Robert Weston Smith).