my father's parents came from a shtetl in the Ukraine, near Kiev. thye spoke Yiddish and Russian. I'm not sure about my maternal grandfather, but I think he came from Hungary or Romania. My maternal grandmother came from a region called Galicia, which is now part of Poland but was part of Austria when she was born.
my maternal grandmother had a Spanish surname, so I suspect her ancestors were Sephardic Jews expelled from Spain in 1492 who wandered eastward to Poland.
My father's family surname is "Cohen". the "Kohanim" are the priests, the descendants of Moses' brother Aaron. recent genetic studies have been able to trace a common gene among all those who claim to be Kohanim. the gene can be traced back 700 years.
my children have an interesting mix. in addition to Eastern European Jewish ancestry, they allso have Mediterranean roots. my former mother in law was a Sephardic Jew, whose family was based in Greece and Turkey.