Isak Federgruen was born in Lapanow, Poland, 1876 to Ovadia and Riva. He was a merchant and married to Rivka nee Blonder. Prior to WWII he lived in Grombach, Germany. During the war he was in Gurs, France. Isak was murdered in the Shoah. Place of death: Gurs, France, 1941.
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