Sounds like Denmark or lower Sweden.
>It was population pressure which, according to their legends, caused them to move en masse to ... Poland.
Must have been really crowded there. Sure, you betcha.
>Unfortunately, there is no archaeological evidence to support the legend.
Oh, well. They always were great story tellers.
>What does seem to have happened is that there was a slow, steady drift from the Oder-Vistula region into the Ukraine, or Scythia as it was known to the ancients.
Probably went back there to visit their old Uncle BjÖrn. {ggg}. But it is interesting, most everywhere they go they run into other tribes of Celts. Was there any one else there in any numbers besides Celts?