Fred MacMurray Steve Douglas Actor Tim Considine Mike Douglas Actor Don Grady Robbie Douglas Actor Stanley Livingston Chip Douglas Actor William Frawley Michael Francis "Bub" O'Casey Actor William Demarest Uncle Charlie O'Casey Actor Barry Livingston Ernie Douglas Actor Tina Cole Katie Miller Douglas Actor Beverly Garland Barbara Harper Douglas Actor Dawn Lyn Dodi Harper Douglas Actor Ronne Troup Polly Williams Douglas Actor Don Fedderson Executive Producer