Origins & Early Life

Fredericka "Marm" Mandelbaum (March 25, 1825 – February 26, 1894) operated as a criminal fence to many of the street gangs and criminals of New York's underworld, handling between $1–5 million in stolen goods between 1862 and 1884. Like her principal rival John D. Grady and the Grady Gang, she also became a matriarch to the criminal elements of the city and was involved in financing and organizing numerous burglaries and other criminal operations throughout the post-American Civil War era. With George Leonidas Leslie, she was involved in the 1869 Ocean National Bank robbery and the 1878 Manhattan Savings Institution robbery.

Pivotal Works & Achievements

Mandelbaum was born Friederike Weisner in Kassel, a city in modern-day Germany. Not much is known of her early life, other than that her family was Jewish. She married Wolfe Mandelbaum in 1848; they worked as itinerant peddlers in Germany before emigrating to the United States in 1850. When the family arrived in New York, they began a series of small businesses, taking in goods collected by scavengers and reselling them. The pair purchased a dry goods store on Clinton Street, but by 1854, the business was operating as a front for the Mandelbaums...

Enduring Legacy & Impact

The historical impact and works continue to influence the modern world.

Contemporary Figures & Related Historical Timelines

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