>It's more than assumption. My father told me that his father did search for people with our last name and didn't find any on the territory of former USSR (CCCP).
>

I see. Yes, I would also think so.

I guess you know Andrew and Ekaterina then.

Just curious, how many brothers do you have, if it's not too personal a question?

My grandmother had a really unique last name, but now, according to my knowledge, there is only one person with it in Israel (my second aunt). And she is the last one with this rare last name.