If it helps at all, there are two guys who play native Americans in some of the Ma & Pa Kettle movies, I don't know which ones. The characters' names are Geoduck and Crowbar. The adam's-apple guy is one of them, though his persona got way more grotesque as time passed. He also did some walk-ons on Jonathan Winters's variety show in the late '60's. His catch phrase, such as it was, was pointing at Jonny and bleating " I'm with YOU!" You're right that there's a vague resemblance to Guy Marx, but it's not him.