Good job your page on Gran Zebrù.
But could I suggest you two simple things?
The correct name is Gran Zebrù (put the stress on U) and in German the name is Konig / König (Koenig as you wrote has no any meanings).
The NW ridge is a difficult route, not mid-difficult, much more than the S normal shoulder that is of II+ or -III (in very rare and bad conditions of the "Butiglia" Pass or the "canalino").
I think you know Harrer or Bonatti, right?
With the Thurwieser N face, the NW is a "school" for Hymalaia as they declared.
I did it last August and I also posted the own route on your page.