How to interpret names on trenchmaps

[Tom Oliviers]

I have a silly question, 

I'm wondering sometimes where the French got their names for German trenches on their canevas de tir (trenchmaps).
Sometimes you see Tr. (Tranchée) with a German sounding name behind it, could it be that this name was taken from German sources? as example captured soldiers that told the French the name of the Trench?

As example thisone:



As you can see, i'm layering it over google earth at the moment

You see names as Tr. Klinger (could this been "Klingergraben"?) or Tr. Roentgen (Röntgengraben)?

Maybe a long shot, maybe something silly but maybe a way to find the old names back from the german trenches?