The Waltons was a highly popular TV series that was on the air from 1972 to 1981. "John Boy Walton," played by Richard Thomas, was one of the show's main characters and the Waltons' oldest son. The show was set during the Great Depression.

The Waltons: Richard Thomas starred as "John Boy"

Richard Thomas played "John Boy" for five years and starred in 122 episodes, before leaving the show in 1977. Since then he has appeared in countless TV films, series and plays. The actor is now 69 years old! Find out more in the video above...

Have you met Lucas, Chris and Caleb?

'The Waltons': Meet Michael Learned's 3 Sons

The cast of 'The Waltons'.

Test your knowledge!

Which beloved character passed away during the show?