Yes, in the german Version its Ausdauer. This translation caused a couple of problems already.
Endurance is Ausdauer. Thats the most common translation.
Ausdauer means Endurance, Stamina, Patience, Hardiness, Persistance.
However, in the game Ausdauer translates as Fatigue, what has the quite Opposite meaning.
The german translation for the ingame Endurance is Kostitution, which is... constitution. The most common word for that attribute.
The german translations are the common words used in most of the games out there. The english words however are kinda unique to Oblivion/Nehrim.
So, whenever you encounter Endurance, and it doesnt work, its prolly Fatigue. If you should enocunter constitution, its Endurance.