NBC Television-photo by Ethel Kirsner, NBC Press · Public domain

The fourth of the five Marx Brothers, he performed with them on the vaudeville circuit until he was drafted into the U.S. Army in 1918, at which point his brother Zeppo stepped into his stage spot and Gummo never returned to performing. He went on to a successful career as a businessman and theatrical agent, notably representing his own brothers, having chosen commerce over the spotlight his siblings made famous.