 These men were probably Iberian Celts from the colony of Braga in Portugal, who seem to have been attached to the XX Legion Valeria Victrix in Chester.Whilst it is unknown which of these Cohorts manned the fort, it seems more likely that the 3rd Cohort of Bracara Augustani performed this duty, as they were from a hilly region and so were more experienced in holding terrain such as that found around Glossop.The Frisiavones were from low-lying lands beyond the Rhine and so may have been divided between the lower terrain of Manchester and Northwich.