GenLias shows that Salomon Cohen was married to Hendrika Schatz and had a son, Joseph. After Hendrika died in 1914, Salomon remarried to Henriette Amalia Pinto and they had a daughter Louise.
Huw 10-10-1912 Groningen #483: Salomon Cohen 34 jaar g. Groningen (Joseph Cohen en Elisabeth de Vries) bero…
In addition, a Jokos file (number 14829) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.