Motel Mordekhai Bejzer Biser was born in Sielec, Poland, 1920 to Mendel and Khana Gitel. He was single. Prior to WWII he lived in Sielec, Poland. During the war he was in Bereza Kartuska, Poland. Motel Mordekhai was murdered in the Shoah. Place of death: Bronna Gora, Poland.
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