Helena Menco was the dauhter of Salomon Menco and Ida Stern. She got married to Salomon Hartog de Leeuw on 7 September 1916 in Winterswijk. The couple had two children: Hartog Salomon and Maurits Salomon.
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In addition, a Jokos file (number 15470) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods …