Veteran actress Helen Kleeb also played Miss Mamie Baldwin on many episodes of The Waltons.
Ron Moody's line, "There was a young boy who wanted a father... He was promised an empire instead.... If he can't have the father's love, he means to have the empire" is quoted in the Christopher Guest movie MASCOTS by Chris O'Dowd, but credited to Michael Landon (O'Dowd's character is very odd so it was probably deliberate he quoted the wrong person).
The filming location site of Malibu Castle in California was demolished after a devastating fire in 2007.