David Blitz was a son of Maurits Blitz and Esther Cosman. He married in Zandvoort on 12 March 1942 to Marianne Moscoviter.
City archive of Amsterdam, archive card of Marianne Moscoviter.
Presumable this person is commemorated on a memorial in Vierhouten. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.