Ireland has a singular history. Unlike England, it was never part of the Roman Empire. There was trade with the Roman Empire most importantly with Roman England, and Ireland was culturally influenced by the Roman Empire. For instance, a Roman script replaced the primitive and clumsy Ogham script. In the period of the final decline of Rome, the Irish joined the other barbarians in raiding Roman and immediately post-Roman England for loot, including slaves. Among those slaves was, famously, the future Saint Patrick.