Josua Cohen was a son of Mozes Cohen and Saartje van Dam. He got married to Kaatje Hamme, a daughter of Hartog Hamme and Lea de Vries. The couple had two children.
Addition of a visitor of the website
In addition, a Jokos file (number 13158) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 1959/8296).
This family is commemorated on a memorial in Assen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.