Analysis of information sources in references of the Wikipedia article "Battle of the Teutoburg Forest" in English language version.
When the Romans began to appear in the region, shortly before the beginning of the Christian era, they turned Noricum into an administrative province, which encompassed much of what today is Austria.
[...] Raetia (modern Bavaria and the adjoining country) [...].
Provinces of Germany[:] Germania was the name of two Roman provinces on the left bank of the Rhine, but also the general Roman designation for the lands east of the Rhine.
At the time, the location of the battle, the Cheruscan tribal seat, even Arminius' real name were unknown. The Teutoburg Forest, called the Osning Forest throughout the Middle Ages, was renamed after Tacitus' account