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Leonard Knorringa, birth 5 Dec 1867 Groningen, died 11 Jun 1943 Sobibor ,Concentratiekamp, son of Heiman Lazerus Knorringa and Esther Mirjam Heije Levie Polak
to: Sara de Beer, birth 29 Feb 1868 Hoorn, died 11 Jun 1943 Sobibor ,Concentratiekamp 1st marriage 2nd marriage, daughter of Levie Philip de Beer and Clara David Wijn |