2nd image:
Given there is some scribbled lines from the line above crossing the first letter, I'd say you are right, the starting letter is a G.
I read it as: G. Genschow, Co. Nürnberg
Which is the same name as in the header (Gustav Genshow). He is/was the founder of GECO, a german ammunition manufacturer during the time of WW1/WW2 - if the context and dating makes sense with the document somehow.
Nürnberg is a german city, so I suspect Krakau makes sense in the second line.
Do you have any other clues on the sheet which name this might be on the second line?
Or do you consider this riddle solved?
Edit: There was an army district by the german "Wehrmacht", which was named "Wehrkeis Generalgouvernement Krakau". Maybe the suspected "Gouverneur" is a reference to that.