Marx Brothers since he did not join the act until Gummo had departed. As with Groucho, three explanations exist for Herbert's name "Zeppo": Maxine Marx reported in "The Unknown Marx Brothers" that the brothers listed their "real" names (Julius, Leonard, Adolph, Milton, and Herbert) on playbills and in programs, and only used the nicknames behind the scenes, until Alexander Woollcott overheard them calling one another by the nicknames. He asked them why they used their real names publicly when they had such wonderful nicknames, and they replied, "That wouldn't be dignified." Woollcott answered with a belly laugh. Woollcott did not meet the
Marx Brothers Marx Brothers until the premiere of "I'll Say She Is", which was their first Broadway show, so this would mean that they used their real names throughout their vaudeville days, and that the name "Gummo" never appeared in print during his time in the act. Other sources reported that the Marx Brothers went by their nicknames during their vaudeville era, but briefly listed themselves by their given names when "I'll Say She Is" opened because they were worried that a Broadway audience would reject a vaudeville act if they were perceived as low class. The Marx Brothers' stage shows became