What is "bremenium"

Bremenium was an ancient Roman fort ( castra) located at Rochester, Northumberland, England. The fort was one of the defensive structures built along Dere Street, a Roman road running from York to Corbridge and onwards to Melrose. Significantly the fort is a long way north of Hadrian's Wall.

The fort's name, Bremenium, is mentioned in the Ravenna Cosmography, the Antonine Itinerary and Ptolemy’s Geographia.