explanation of the changes there was revert war over gdansk danzig danzig gdansk is a compromise which was supposed to stop such revert war ridiculous take a look on article history it is article about polish german painter yet the last changes were edits changing gdansk to danzig and vice versa danzig is nt just german name it's also name by which still the city is known in english world although the fact probably will change in the future therefore it's reasonable to mention both names there is no such case i believe with frauenburg it's small city so there is no point in making alternative name too