Hi Alexandra,
It is hard to believe but maybe we are related. My Grandmother always talked about her older Brother Marc that went to fight in WWII but never returned home. If your Father was from Odessa, and had 2 Sisters and 1 Brother, than we are related. My Grandmother's parents were Ester and Haim not Abraham, but maybe that was his Jewish name.
Please email me back ASAP.
All the best,
Felix Bobritsky
felixbobritsky@gmail.com