"Great find! According to the Mayberry wiki, Mr. Schwamp first appeared in the season 4 episode My Fair Ernest T. Bass. If we could find these for later seasons, there is a decent chance we could identify Mr. Schwamp."
"Interesting. I'd say that's her in the picture. I think the uncredited people on those imdb lists are added by fans like us who watch the episode and happen to recognize someone they know and then they add them to the episode's cast list, so that…"
"Wow! Nice work! That's definitely the same Marvel Lawrence. John's death date matches up with the newspaper article I listed above from June 30, 1974 where it said Marvel's husband died on Tuesday, which would have been June 25, 1974 and the link…"
"Nice Dress Nellie" is an actress that appeared in at least 34 episodes of the show. (Mayberry Wiki article) "According to assistant director Bruce Bilson, her name is Marvel, but he did not give her full name. Marvel was a stand in for Don Knotts…