The territory of the Selgovae was substantially planted with Roman forts at this time, at Broomholm, Blatobulgium (Birrens), Ward Law, Milton, Drumlanrig, Dalswinton, and at Glenlochar on the eastern bank of the River Dee, which was perhaps the boundary between the Selgovae and the neighbouring Novantae. This suggests (but does not confirm) that the Selgovae were among the British peoples who had strongly resisted Roman occupation. This is in contrast to the neighbouring Novantae, where there are no signs of Roman occupation save the fortlet at Gatehouse of Fleet, in the southeast of their territory.