The core clans of our extended family (Chaleff, Direktovich, Dubin, Gilner, Olemberg, Olenberg), as Europeans, were last found in the area where Lituania, Poland and Belarus come together. The area is, more or less, on a straight line from Warsaw in Poland, thru Wyzkow, Ostrow Mazowieka, Pultusk and Bialystok to Grodno, and vicinity, in Belarus.
Some branches of the family will be able to be traced to the same general area as far back as about 1780. Recent clues seem to indicate that the Olemberg/Olenberg clan may have been in Lithuania at about that time and moved south in the early to mid 1800's upon breakouts of cholera and famine in Lithuania..
Where were these clans before that? A supposition is that, at least for the Olemberg/Olenberg clan, that line between Grodno and Warsaw can be continued. That is, that this clan was in the area of Czestochowa before going to Lithuania and then back south to Poland. It appears that this clan was in Saxony in the late 1500's and before that, possibly Holland & Spain. These are just guesses but fit in with various clues and general migrations at the time.
Clues for other branches of the family have not surfaced yet, but there is a possibility that the Grodno area branches of the family originated from near the Black Sea. If so, they could have arrived in the Ottoman Empire from Spain during the Inquisition. Again, these are just possibilities.