Topic summary
Batavis

Extracted from the Wikipedia article Passau.
History
Passau was an ancient Roman colony called Batavis, Latin for "for the Batavi". The Batavi were an ancient Germanic tribe from area of the Rhine delta who frequently served in the Roman army as auxiliary troops. Batavis (Passau-Altstadt) was a Roman castrum in the province of Raetia, while another late Roman castrum, Boiotro (Passau-Innstadt), was in the province of Noricum.