|Arnhemsche Courant, 17-9-1925|
On March 25, 1939, in Oruro Henk Zijderveld was married to his second wife, Isabella (“Isa”) Lora. That same year on August 21, 1939, in Oruro, Henk's youngest sister Jacoba Suzanna (“Ko”) Zijderveld was married to Jan Boost. Around 1980 Ko was living as nun “Soeur Jacoba” in Jerusalem, Israel. In the summer of 1992 Jacoba was living in Neuchâtel, Switzerland.
Henk Zijderveld died on January 10, 1963, living Isa Lora as a widow.
Sources: Delpher.nl, WieWasWie.nl.