Hiberno-Roman relations refers to the relationships (mainly commercial and cultural) which existed between Ireland (Hibernia) and the ancient Roman Empire, which lasted from the time of Julius Caesar to the beginning of the 5th century AD. Ireland was one of only a few areas of western Europe that was not conquered by Rome.
Gold coins have already been found near Dublin and at Bray; silver and bronze coins at Newgrange; brooches at Knockawlin and Cashel; occasional finds of grave goods have included Roman or Romano-British items. Richard Warner of the Ulster Museum has noted what he claims to be ‘a Roman grave’ at Kilkenny with a cremation in an urn. Colins Adams
Rome never annexed Hibernia (the Latin name for Ireland) into the Roman Empire, but did exert influence on the island, although only a small amount of evidence of this has survived.
This influence was expressed in three characteristic ways: commercial; cultural and religious; and military.
The relationship between Rome and Hibernia was mostly commercial. Scholar Richard Warner in 1995 wrote that after emperor Claudius' invasion of southern Britannia, the trade routes between the Mediterranean sea and Roman Britannia encompassed even Hibernia. The geographer Ptolemy, in his map of the 1st century AD, pinpointed the coastal settlements and tribes of Ireland, showing a knowledge that (it is suggested) only merchants could have achieved in that century. Additionally, there are many Roman archaeological objects (mainly jewellery and Roman coins) found in areas of central and southern Ireland (such as Tara and Cashel), that reveal a relationship. Roman coins have also been found at Newgrange.