Iron Age Britain in the context of "Prehistoric Ireland"

Bronze Age Britain is an era of British history that spanned from c. 2500–2000 BC until c. 800 BC. Lasting for approximately 1,700 years, it was preceded by the era of Neolithic Britain and was in turn followed by the period of Iron Age Britain. Being categorised as the Bronze Age, it was marked by the use of copper and then bronze by the prehistoric Britons, who used such metals to fashion tools. Great Britain in the Bronze Age also saw the widespread adoption of agriculture.

During the British Bronze Age, large megalithic monuments similar to those from the Late Neolithic continued to be constructed or modified, including such sites as Avebury, Stonehenge, Silbury Hill and Must Farm. That has been described as a time "when elaborate ceremonial practices emerged among some communities of subsistence agriculturalists of western Europe".

The Caledonians (/ˌkælɪˈdoʊniənz/; Latin: Caledones or Caledonii; Ancient Greek: Καληδῶνες, Kalēdōnes) or the Caledonian Confederacy are believed to be a Brittonic-speaking (Celtic) tribal confederacy in what is now Scotland during the Iron Age and Roman eras. The Greek form of the tribal name gave rise to the name Caledonia for their territory. The Caledonians were considered to be a group of Britons, but later, after the Roman conquest of the southern half of Britain, the northern inhabitants were distinguished as Picts, thought to be a related people who would have also spoken a Brittonic language. The Caledonian Britons were thus enemies of the Roman Empire, which was the state then administering most of Great Britain as the Roman province of Britannia.

The Caledonians, like many Celtic tribes in Britain, were hillfort builders and farmers who defeated and were defeated by the Romans on several occasions. The Romans never fully occupied Caledonia, though several attempts were made. Nearly all of the information available about the Caledonians is based on predominantly Roman sources, which may be biased.

A crannog (/ˈkrænəɡ/; Irish: crannóg [ˈkɾˠan̪ˠoːɡ]; Scottish Gaelic: crannag [ˈkʰɾan̪ˠak]) is typically a partially or entirely artificial island, usually constructed in lakes, bogs and estuarine waters of Ireland, Scotland, and Wales. Unlike the prehistoric pile dwellings around the Alps, which were built on shores and not inundated until later, crannogs were built in the water, thus forming artificial islands.

Humans have inhabited crannogs over five millennia, from the European Neolithic Period to as late as the 17th/early-18th centuries. In Scotland there is no convincing evidence in the archaeological record of their use in the Early or Middle Bronze Age or in the Norse period. The radiocarbon dating obtained from key sites such as Oakbank and Redcastle indicates at a 95.4 per cent confidence level that they date to the Late Bronze Age to Early Iron Age. The date ranges fall after around 800 BC and so could be considered Late Bronze Age by only the narrowest of margins.

Goosehill Camp is a prehistoric earthwork that dates back to the Iron Age. It consists of two concentric banks and ditches. The inner enclosure has one entrance and surround two levelled hut sites. Goosehill Camp is within the Kingley Vale National Nature Reserve, on the South Downs.

The Silures (/saɪˈljʊəriːz/ sy-LURE-eez or /ˈsɪljəriːz/ SIL-yər-eez) were a powerful and warlike tribe or tribal confederation of ancient Britain, occupying what is now south-east Wales and perhaps some adjoining areas. They were bordered to the north by the Ordovices, to the east by the Dobunni, and to the west by the Demetae.

Verlamion, or Verlamio, was a settlement in Iron Age Britain. It was a major centre of the Catuvellauni tribe from about 20 BC until shortly after the Roman invasion of AD 43. It is associated with a particular king, Tasciovanus. Its location was on Prae Hill, 2 km to the west of modern St Albans.

The Cenimagni were a tribe of Iron Age Britain in the first century BCE. They are known only from a brief mention in the writings of Julius Caesar. It has been suggested that the name is a variant of Iceni with the Latin adjective magni, meaning "great". Others have suggested that they may have been one of the four tribes of Kent, represented in Caesar by references to the "four kings of that region" and in the archaeological record by distinct pottery assemblages.

During Julius Caesar's second invasion of Britain in 54 BCE, following Caesar's military success and restoration of King Mandubracius to power over the Trinovantes, opposition to the Romans coalesced around the figure of Cassivellaunus which led to divided loyalties among the Britons, as Caesar records. Emissaries of five British tribes, including the Cenimagni (the others being the Ancalites, the Segontiaci, the Bibroci and the Cassi), arrived at the Roman camp to treat for peace, and agreed to reveal details of Cassivellaunus' stronghold. Caesar besieged him there and brought him to terms. When Caesar left Britain he took hostages from the Britons, although which tribes were compelled to give any is not specified.