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Western edge of the fort

Blatobulgium (also, Baltobulgio) was a Roman fort, located at the modern-day Birrens, Dumfriesshire, Scotland.

The name comes from the Brittonic roots *blāto- meaning "flour", and *bolgo- meaning "bag" or "bulge"; so essentially, the name is "flour-sack". There were three granaries at the fort, as demonstrated by the archaeological evidence.


  • Rivet, A.L.F.; Smith, Colin (1979). The Place-Names of Roman Britain. London. pp. 268–269. 

Coordinates: 55°03′54″N 3°13′28″W / 55.0651°N 3.2244°W / 55.0651; -3.2244