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Ireland

What is known of pre-Christian Ireland comes from references in Roman writings, Irish poetry and myth, and archaeology.

The Iron Age in Ireland began about 600 BCE. The period between the start of the Iron Age and the historic period (431 CE) saw the gradual infiltration of small groups of Celtic-speaking people into Ireland, with items of the continental Celtic La Tene style being found in at least the northern part of the island by about 300 BCE. The result of a gradual blending of Celtic and indigenous cultures would result in the emergence of Gaelic culture by the fifth century.

Source

See also

Irish Potato Famine