sentences:  That Roman-era regional rulers were able to exert such power is suggested by the Roman tolerance of native hill forts where there was local leadership under local law and custom.Whatever the circumstances, there is nothing known to connect these settlers either to Roman policy, or to the Irish raiders (the Scoti) of classical Roman accounts.Forts and roads are the most visible physical signs of a past Roman presence, along with the coins and Roman-era Latin inscriptions that are associated with Roman military sites.