I have just found out that my grandfather was not called Henri Saul but Haim
Saul, probably born in Smirna (now Turkey). He died in Marseille (France) in
1953, and neither my father nor my mother knows about my Jewish origin.
How can I learn more about my grandfather and my ancestors?
Pierre Saul

With your interest in Smirna/Izmir, you should also consider Istanbul. A search of
50,000 Istanbul records (for [S]aul) shows many possible family matches:
http://www.benkazez.com/dan/family/searchForm-ist.inc.php

Dan Kazez
KAZEZ / ALHADEF / FRESKO / BENHABIB
Springfield, Ohio USA