Dear Christine, 

To my knowledge, Morocco was a French protectorat from 1881 to 1956.
There are some archives in France (Nantes, La Courneuve)
Dray being a quite common name -- I would suggest 
1/ To check janvier 2020 (diplomatie.gouv.fr)
2/ To write here : archives.cadn[@]diplomatie.gouv.fr  - with as much as possible all the information available (it will take time, but they will answer)
3/ To contact a french jewish genealogy organisation Cercle de Généalogie Juive | La première association française de généalogie juive (genealoj.org)
4/ To contact another one (GAMT Accueil bienvenue - GAMT Association Francaise de Généalogie - French Genealogy Association - Asociación Francesa Genealogia (genealogie-gamt.org)

Both of them 3/ and 4/ are very active and might help you in your research (but they would probably need more details)

Hope that helps, I am also interested in your findings as the Jewish community was following the less difficult status for the Jews between Morocco, Algeria and Tunisia. A lot of moves here.

All the best, 

Regards,
David CHOUKROUN

david.choukroun@...
FRANCE

CHOUKROUN ATTALI ATLANI