They occupied the Portuguese region of Estremadura-Beira Litoral Province (coastal central Portugal), where they held the fortified towns (Oppida) of Aeminium (Coimbra), Conimbriga (Condeixa-a-Velha, near Coimbra), Coniumbriga (possibly Monte Meão), Collipo (São Sebastião do Freixo, Batalha), Eburobrittium (Amoreira, Óbidos),[1] and Ierabriga (Alenquer).
An off-shot of the Turduli people, the Turduli Oppidani trekked northwards around the 5th century BC in conjunction with the Celtici[2][3][4] and ended settling the present-day central coastal Portuguese Estremadura-Beira Litoral Province.
Their history after the Second Punic War is less clear; is it almost certain that the Oppidani remained under Lusitani overlordship and bore the brunt of the first Roman thrusts into the Iberian northwest.
In 138-136 BC Consul Decimus Junius Brutus devastated their lands in retaliation for them helping the Lusitani.
[5] The Oppidani were certainly defeated and technically included in Hispania Ulterior province by the Praetor Publius Licinius Crassus in the wake of his campaign against the Lusitani and Celtici in 93 BC.