History / Are Suwalki/North East Poles Polonised Lithuanians/Balts? [3]

Question for Polish members. Is it true that Suwalki inhabitants have a lot of Baltic blood?

History / Polish Prussia, Kashubians, Masurians, and Saxonians? [3]

I aware that Polish Prussia is basically land of immigrants, and few times population structure was changed, not just by newcomers from Belarusia, but from Southern Poland AFAIK. More than anywhere else that is situation with population of corridor which was changing hands few times. But what is case with territories which allays were part of Poland. Weren't there complete change of population structure took a place? Isn't autochthonousness of Kashubians and Masurians just myth? What with assimilation of Prussians and possibly of part of Saxonians in Polish nation? Is there any scholarly work about it?