So there are actually two Shelly’s Barney used a play on in the show. The first is obviously the Lorenzo von Matterhorn play but the second is the art consultant for The Captain and he used the play “The Royal Archduke of Grand Fenwick” Could you consider adding that as an answer for that question?
You are right, I did not realize that when I made this quiz. I have updated the question to be slightly more specific, to make sure that it's clear that we are not talking about the art consultant.
Thank you for pointing this out :-).