Arnold de Jonge was a son of the widow Matha de Jonge-Schreiber. He was a salesman amongst other professions.
Addition of a visitor of the website.
In addition, a Jokos file (number 5806) 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 5909/16389).