The Celtiberians were a group of Celts and Celticized peoples inhabiting an area in the central-northeastern Iberian Peninsula during the final centuries BC.
Most scholars include the Arevaci, Pellendones, Belli, Titti and Lusones as Celtiberian tribes, and occasionally the Berones, Vaccaei, Carpetani, Olcades or Lobetani.
The term Celtiberi appears in accounts by Diodorus Siculus,[5] Appian[6] and Martial[7] who recognized intermarriage between Celts and Iberians after a period of continuous warfare, though Barry Cunliffe says "this has the ring of guesswork about it.
[1] Pliny the Elder thought that the original home of the Celts in Iberia was the territory of the Celtici in the south-west, on the grounds of an identity of sacred rites, language, and the names of cities.
[10] Celtic presence in Iberia likely dates to as early as the 6th century BC, when the castros evinced a new permanence with stone walls and protective ditches.
The cultural stronghold of Celtiberians was the northern area of the central meseta in the upper valleys of the Tagus and Douro east to the Iberus (Ebro) river, in the modern provinces of Soria, Guadalajara, Zaragoza and Teruel.
The two-edged sword adopted by the Romans was previously in use among the Celtiberians, and Latin lancea, a thrown spear, was a Hispanic word, according to Varro.
From the 3rd century, the clan was superseded as the basic Celtiberian political unit by the oppidum, a fortified organized city with a defined territory that included the castros as subsidiary settlements.
These civitates as the Roman historians called them, could make and break alliances, as surviving inscribed hospitality pacts attest, and minted coinage.
The old clan structures lasted in the formation of the Celtiberian armies, organized along clan-structure lines, with consequent losses of strategic and tactical control.
[citation needed] In 220 BC, the Punic army was attacked when preparing to cross the Tagus river by a coalition of Vaccei, Carpetani and Olcades.
Despite these clashes, during the Second Punic War the Celtiberians served most often as allies or mercenaries of Carthage in its conflict with Rome, and crossed the Alps in the mixed forces under Hannibal's command.
After the conflict, Rome took possession of the Punic empire in Spain, and some Celtiberians soon challenged the new dominant power that loomed in the borders of its territory.
The following year, it refused to pay tribute or provide a military contingent to Rome but formed instead a confederacy with neighboring towns and began the construction of a defensive wall.
Eventually, as their hunger increased, envoys were sent to Scipio, asking if they would be treated with moderation if they surrendered, pleading that they had fought for their women and children, and the freedom of their country.