Kushner was born Joseph Berkowitz on 10 October 1922 in Navahrudak (Polish: Nowogródek), in what was then eastern Poland.
[1] Charles Kushner was the chief benefactor of the Museum of Jewish Resistance.
[1] In the aftermath of the war, Navahrudak was transferred from Poland to the Byelorussian SSR of the Soviet Union under territorial changes dictated by the Potsdam Agreement.
[4] Rae Kushner and her spouse immigrated to the United States as Sh'erit ha-Pletah from the Soviet Union in 1949.
[1] Kushner worked as a carpenter in New Jersey eventually running his own business which was funded by the G.I.