Salomon de Groot was the widower of Sientjen Vromen, since 1935.
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Salomon de Groot died on 13 July 1943 in Westerbork transit camp and he was cremated on 16 July 1943. The urn with his ashes was placed on the Jewish cemetry in Almelo on row 5, grave nr. 6.
Register van joden die in het kamp Westerbork zijn gecremeerd, 1943-1944; archief van de gemeente Midden-Drenthe te Beilen, inv. n 3789
In addition, a Jokos file (number 61341) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.