Birrens
Blatobulgium was a Roman fort, located at the modern-day site known as Birrens, in Dumfriesshire, Scotland.
Blatobulgium is recorded in the Antonine Itinerary. The name derives from the Brittonic roots *blāto- 'bloom, blossom' or *blāto- (from earlier *mlāto-), 'flour' and *bolgo-, 'bag, bulge'. The name may mean 'flowery hillock' or 'flowery hollow'. However, as there are granaries at the fort, Blatobulgium may be a nickname meaning 'Flour Sacks'.
The fortress formed the northern terminus of the Roman-era Watling Street, Route 2 of the Antonine Itinerary. It was located in the territory of the Selgovae.
Coordinates: 55°03′54″N 3°13′28″W / 55.0651°N 3.2244°W
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