Timeline Chart

Female  Betrina van Blankenstein
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Male  Salomon van Blankenstein
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Birth -- 24 June 1855 25 22 IJsselmonde
Birth -- 12 February 1868 37 35 IJsselmonde
Civil Marriage -- 11 June 1877 ‏(Age 21)‏ IJselmonde Jacob "Jacques" Kooperberg
Civil Marriage -- 21 May 1913 ‏(Age 45)‏ Rotterdam Elisabeth den Hartog
Death -- 10 October 1920 ‏(Age 65)‏ Den Haag
Death -- 5 November 1942 ‏(Age 74)‏ Auschwitz