Isaac de Vries was a son of Adolph de Vries and Vrouwtje Winnik de Jong. He married 2 June 1898 in Amsterdam to Flora Onderwijzer, a daughter of Samson Abraham Onderwijzer and Elisabeth Moses van Gelder. The couple had three children: Adolf, Elisabeth and Samson. Flora passed away on 7 July 1930 and…
In addition, Jokos files (numbers 33420, 55685) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.