High Quality Content by WIKIPEDIA articles! Jacob Rosenzweig (1875 - October 4, 1947) 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, Harry Vallon, and Sam Schepps. Rose`s testimony was the most damaging because he directly implicated Becker in arranging the murder of Herman Rosenthal. As Becker`s debt collector, Rose confessed to hiring the Lenox Avenue Gang, providing the getaway car. He testified he did it all on the orders of Charles Becker.