Lauren Chapin, Youngest Child on ‘Father Knows Best,’ Dies at 80

For six seasons, she was Kathy, a giggly tomboy whose father, played by Robert Young, called her Kitten. Her offscreen life, however, was harrowing.

​For six seasons, she was Kathy, a giggly tomboy whose father, played by Robert Young, called her Kitten. Her offscreen life, however, was harrowing.