WHEN YOU THINK of the Marx Brothers, you likely think of Groucho’s wisecracks, Harpo’s sight gags, and even Chico’s piano specialties. You don’t think about their brother Zeppo.
When you think of the Three Stooges, you likely think of three guys slapping and poking each other: Moe, Larry, and Curly. Not Curly’s replacement, Shemp (and certainly not later replacements Joe Besser and Joe DeRita).
Show biz has few stars but plenty of also-rans. And as if fate ordered it, two new biographies published within two weeks of each other—Zeppo: The Reluctant Marx Brother, by Robert S. Bader, and Shemp!, by Burt Kearns—tell the stories of Zeppo Marx and Shemp Howard, unsung members of famous comedy teams. What a time to be alive.
Zeppo is the dullest Marx brother on screen,…