Nathan Lopes Cardozo was the fourth out of five children of Hartog Lopes Cardozo (who passed away in 1937). Four children survived the war.
Stadsarchief Amsterdam, archiefkaart Gobets
In addition, a Jokos file (number 654) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.