Elias Groen was a son of Levy Groen and Naatje Viskoper. He left in 1930 for Holy Oke (USA). He returned in 1931 in The Hague and left in 1938 for Amsterdam. Addition of a visitor of the website
In addition, a Jokos file (number 53054) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.