Betty McMahonActingNo biography available.Known For6.9The More the Merrier19437.0George White's 1935 Scandals19357.0The Burning Cross1947Fan ClubNo Nerds have favorited Betty McMahon yet — be the first.All fan clubsFrom NerdspinFilmographyActor51960My Three SonsTVNancy Mosby • 1 episodes★ 6.61947The Burning CrossFilmMinor Role (uncredited)★ 7.01943The More the MerrierFilmMiss Geeskin (uncredited)★ 6.91935George White's 1935 ScandalsFilmChorine★ 7.01935His Old FlameFilm★ 7.0