I don't know about the others, but Kopernik was hardly a "fundamental" priest. He organized the defense of Prussian towns who sided with Poland against a Teuton

I don't know about the others, but Kopernik was hardly a "fundamental" priest. He organized the defense of Prussian towns who sided with Poland against a Teutonic Knights army who had the permission of the pope to "baptize" these "pagan" lands. Polish/Prussian side (which Kopernik supported, even including participation in the defence of the besieged city) argued that pagans had the right to live and defend their land, and that faith alone is not a sufficient justification to conquer foreign countries. And it's not even sure if Kopernik was a priest at all. He was a canon at Frombork Cathedral, but at the time you didn't have to be a full-blown priest, he could have just been a deacon or even a subdeacon (and that's the currently favoured theory).