Joseph Cohen was a son of Israël Cohen and Henriëtte Uit de Tuinen. He married in 1916 in Haarlem to Rachel de Raaij. They had two children who survived the war. They divorced in 1926.
Addition of a visitor of the website
Joseph Cohen and Rachel Engelsman married in 1928 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Joseph Cohen
In addition, a Jokos file (number 50382) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.