Jacob Rosenzweig was an American gambler and underworld figure in New York City. He was one of several star witnesses in the Becker-Rosenthal trial, among these being fellow gamblers Bridgie Webber, H

Samuel Schepps, also known as Schapps, was a New York City mobster with the Monk Eastman Gang. Schepps ran gambling houses for Jack Zelig as part of his work with the gang.