Joseph Verdoner was a son of Elias Verdoner and Rachel Espinosa. He married 27 April 1932 in Amsterdam to Greta Presser, daughter of Jacob Presser and Klaartje Goudeketting.
website www.wiewaswie.nl .
In addition, a Jokos file (number 55212) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.