Lejb Rubinsztejn was born in Kock, Poland, 1915 to Moshe Yitzkhak and Sara. He was a merchant and married to Khai Zisil nee Goldman. Prior to WWII he lived in Kock, Poland. During the war he was in Kock, Poland. Lejb was murdered in the Shoah. Place of death: Treblinka, Poland, 04/05/1943.
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