Battle of Grunwald/Talk

Is it Grunwald, or Grünewald? JHK

In Polish it is certainly Grunwald. And it is in middle of Poland now, so that should be a default spelling on Wikipedia. Not to mention that its simpler (On the other hand this is etymologically clearly a German word.). If German spelling is Grünewald or whatever you can add a note about this spelling. --Taw