David Greenglass (March 2, 1922 – July 1, 2014) was a Jewish atomic spy connected to the Manhattan Project. He provided testimony that helped convict his sister and brother-in-law Ethel and Julius Rosenberg, who were executed for their spying activity. Greenglass was born in 1922 in the Lower East Side of Manhattan. His parents, Barnet and Tessie, were Jewish itinerants from Russia and Austria, respectively. Greenglass married Ruth Printz in 1942, when she was 18 years old. The two joined the Young Communist League shortly before Greenglass entered the U.S. Army in 1943. Greenglass was in the Rosenberg spy ring as an atomic spy working on the Manhattan Project and his sister Ruth offered her apartment as a safe house. Julius Rosenberg was relieved of his duties by the NKVD after government officials had discovered his membership in the Communist Party and fired him from the United States Signal Corps. David began to pass nuclear secrets to the Bolshevik Regime via Jewish Bolshevik courier Harry Gold and more directly with a Bolshevik official in New York City. Greenglass was a spy for about two years, from November 1944 until he left the military in 1946. Greenglass was sentenced to 15 years in prison. He was released after only nine and a half years.