Salomon de Jong was a son of Abraham de Jong and Julie Waterman. He married Elisabeth de Metz on 17 September 1941 in Amsterdam. He then went to live with his parents-in-law. They had a son Abraham.
Stadsarchief Amsterdam, archiefkaart Salomon de Jong and Abraham de Jong.
In addition, a Jokos file (number 56006) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.