Moses Aaron Gruen was born in Ustrzyki Dolne, Poland, 1884 to Menakhem. He was a diamond merchant/cutter and married to Rakhel nee Dolinger. Prior to WWII he lived in Antwerpen, Belgium. During the war he was in Antwerpen, Belgium. Moses Aaron was murdered in the Shoah. Place of death: Auschwitz, Poland, 1942.
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