Dear David, (nice first name :)

You will have part of the answer most probably into the Fond de Moscou file where there is a reference about Fritz 
The right reference to ask to the French Archive Nationale is 19940435/16 (this was into the 1st supplementary list -- see below)
You might want also to check all the other files with the same name (quite unusual). I have seen about 10 other files -- possibly the same family

The other source I have in mind is the Archives of the Prefecture de Paris : 
https://www.prefecturedepolice.interieur.gouv.fr/Nous-connaitre/Services-et-missions/Service-de-la-memoire-et-des-affaires-culturelles/Les-archives-de-la-prefecture-de-police
Unfortunately, the Covid is preventing to search (on-site only) for this 2nd one  - We need to wait a possible re-opening in the next months to come

I guess you tried already the decennale table of Paris (for the marriage)

All the best 
David


--
Regards,
David CHOUKROUN

david.choukroun@...
FRANCE

CHOUKROUN ATTALI ATLANI