Izaak van Loen was a son of Barend van Loen and Debora Querido. He got married to Benevenida Gans in Amsterdam in 1917. The couple had four children: Barend, Debora Sara, Jeanette Lea and one child that survived the war. Barend and the surviving child resided at other addresses. Since 1935 Benevenida van Loen-Gans resided at the psychiatric institution Apeldoornse Bos.
Addition of a visitor of the website
In addition, a Jokos file (number 53040) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.