Jim-Bob Walton

James Robert Walton is the yougest son of the Walton clan. He had a twin brother, Joseph Zebulon who died at birth. He is a mechanically inclined dreamer who desires to become a pilot. His eyesight holds him back from following that plan with the Air Force. Along the way he builds his own car out of old parts. Due to war rationing he uses a still to make a petro alternative from alcohol. Although he dates Patsy Brimmer, Jim-Bob's first love affair is with Mary Francis Conover, the Baldwin's first cousin and a young woman studying to become a nun. "The Calling" (s7-ep2)

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David Harper

Born: October 4, 1961

David William Harper did not make the transition from child star to adult actor after the series ended. He appeared in The North and the South and the Chevy Chase comedy Fletch but then fell into relative obscurity. Choosing to live a private life, not much is known about Harper since the show's run. He did work for a period as a driver for his fellow on-screen brother's (Eric Scott) courior company and more recently he has become active at Walton Reunion events much to the delight of his fans.

Further Reading

David's Wikipedia Page
David's listing on IMDb