 Which one is which? I mean, they sound so much alike. So he replaced Perry as Throckmorton P. Gildersleeve and played the character through the radio run another seven years, until 1957, and then on a short-lived great Gildersleeve television series in 1955. Willard Waterman's TV credits included My Favorite Martian, Bat Masterson, 77 Sunset Strip, Bonanza...