Jack Bannon who Co starred on Lou Grant has died. his mother was the late Bea Benaderet star of Petticoat Junction [Kate Bradley]. Jack made numerous guest appearances on Petticoat Junction. also The Beverly Hillbillies & Green Acres. his father was actor Jim Bannon. he was married to John Travolta's sister Ellen Travolta. Bea Benaderet died in 1968 Jack continued acting after his mother's death. he appeared in the movie Death Warrant in 1990 starring Jean Claude Van Damme also in the movie was Robert Guillaume who just passed away a day before Jack Bannon.