This person lived alone or no information about family members is known or traceable.
His wife remained in Berlin.
However the date of his death,21 april 1943, is the date of the transport from Westerbork to Theresienstadt.
The Dutch Red Cross reports:
The Dutch Red Cross has passed on a declaration that Martin Israelski died in Middle Europe not earlier than 01-10-1944 and latest 28-02-1945.