A city of the Hanseatic League with lots of Germans
Oh please, it was a Polish capital, next thing you know you're going to make a city with 80% Polish population built by Poles and being a Polish capital into a German one, of course it was a member of the league, the league couldnt afford not to have it since it was a gateway to all of Eastern Europe, btw Germans at their peak made up 6% of the population, thats not a "lot".
Any link for that?
The guy lived and made business in a predominantly Polish city, so did his grandfather and his great grandfather unless the guy was tugging an interpreter everywhere he went then yeah he spoke Polish, especially since he used a Polish name.
Interestingly enough Kopernik never signed his letters in German, ever, his signature Copernicus is pure Latin, some German guy (dont remember the name) introducted Kopernikus in 18century.
How come he took the german nationality if his fathers had been polish (as you say)!
How do you figure he took the then non-existent "German nationality"? He signed his works in Latin, he studied in Poland and could write Polish second names with whats an apparent understanding of gramatics, was the subject of the Polish crown and had a father who's family came from then predominantly Czech Bohemia and lived in Kraków for generations.
From a german family
Got any proof of that claim? There is no definite source that would confirm that Koperniks father had German roots, he definitely could not speak German, since he was a businesman in a Polish city he had to speak Polish and Latin to even do business.
who took german nationality for studies...
As far as i know Kopernik studied in Kraków, Poland and in Italy, his main preoccupation in Toruń was astronomy and fighting Germans for the Polish king.