Decimus Junius Brutus
During the Punic Wars, the Romans became aware of the Castro region's rich deposits of gold and tin. Viriathus, leading Lusitanian troops, hindered the expansion of the Roman Republic north of the river Douro. His murder in 138 BC opened the way for the Roman legions. Over the following two years, Decimus Junius Brutus advanced into the Castro region from south of the Douro, crushed the Castro armies, and left Cividade de Terroso, in ruins.