Iron Age Ireland in the context of "Ulster Museum"

The British Iron Age is a conventional name used in the archaeology of Great Britain, referring to the prehistoric and protohistoric phases of the Iron Age culture of the main island and the smaller islands, typically excluding prehistoric Ireland, which had an independent Iron Age culture of its own.The Iron Age is not an archaeological horizon of common artefacts but is rather a locally-diverse cultural phase.

The British Iron Age followed the British Bronze Age and lasted in theory from the first significant use of iron for tools and weapons in Britain to the Romanisation of the southern half of the island. The Romanised culture is termed Roman Britain and is considered to supplant the British Iron Age.

The Insular Celts were speakers of the Insular Celtic languages in the British Isles and Brittany. The term is mostly used for the Celtic peoples of the isles up until the early Middle Ages, covering the British–Irish Iron Age, Roman Britain and Sub-Roman Britain. They included the Celtic Britons, the Picts, and the Gaels.

The Insular Celtic languages spread throughout the islands during the Bronze Age or early Iron Age. They are made up of two major groups: Brittonic in the east and Goidelic in the west. While there are records of Continental Celtic languages from the sixth century BC, allowing a confident reconstruction of Proto-Celtic, Insular Celtic languages became attested only during the early first millennium AD. The Insular Celts followed an Ancient Celtic religion overseen by druids. Some of the southern British tribes had strong links with mainland Europe, especially Gaul and Belgica, and minted their own coins.

The Hill of Tara (Irish: Teamhair or Cnoc na Teamhrach) is a hill and ancient ceremonial and burial site near Skryne in County Meath, Ireland. Tradition identifies the hill as the inauguration place and seat of the High Kings of Ireland; it also appears in Irish mythology. Tara consists of numerous monuments and earthworks—dating from the Neolithic to the Iron Age—including a passage tomb (the "Mound of the Hostages"), burial mounds, round enclosures, a standing stone (believed to be the Lia Fáil or "Stone of Destiny"), and a ceremonial avenue. There is also a church and graveyard on the hill. Tara forms part of a larger ancient landscape and Tara itself is a protected national monument under the care of the Office of Public Works, an agency of the Irish Government.