Callaicus, Roman general] but they have also brought it about that now, already, the most of the Lusitanians are called Callaicans. Roman Gallaecia After the Punic Wars, the Romans turned their attention to conquering Hispania. The tribe of the Gallaeci 60,000 strong, according to Paulus Orosius, faced the Roman forces in 137 BC in a battle at the river Douro (, , , ), which resulted in a great Roman victory, by virtue of which the Roman proconsul Decimus Junius Brutus returned a hero, receiving the agnomen Gallaicus ("conqueror of the Gallaicoi"). From this time, Gallaic fighters joined the Roman legions, to serve as far away as Dacia and Britain. The final extinction of Celtic resistance was the aim of the violent and ruthless Cantabrian Wars fought under the Emperor Augustus from 26 to 19 BC. The resistance was appalling: collective suicide rather than surrender, mothers who killed their children before committing suicide, crucified prisoners of war who sang triumphant hymns, rebellions of captives who killed their guards and returned home from Gaul. For Rome Gallaecia was a region formed exclusively by two conventus—the Lucensis and the Bracarensis—and was distinguished clearly from other zones like the Asturica, according to written sources: Legatus iuridici to per ASTURIAE ET GALLAECIAE. Procurator ASTURIAE ET GALLAECIAE. Cohors ASTURUM ET GALLAECORUM. Pliny: ASTURIA ET GALLAECIA In the 3rd century, Diocletian created an administrative division which included the conventus of Gallaecia, Asturica and, perhaps, Cluniense. This province took the name of Gallaecia since Gallaecia was the most populous and important zone within the province. In 409, as Roman control collapsed, the Suebi conquests transformed Roman Gallaecia (convents Lucense and Bracarense) into the kingdom of Galicia (the Galliciense Regnum recorded by Hydatius and Gregory of Tours). Roman governors Aconius Catullinus Philomatius, praeses before 338 Later Gallaecia On the night of 31 December 406 AD, several Germanic barbarian tribes, the Vandals, Alans, and Suebi, swept over the Roman frontier on the Rhine. They advanced south, pillaging Gaul, and crossed the Pyrenees. They set about dividing up the Roman provinces of Carthaginiensis, Tarraconensis, Gallaecia, and Baetica. The Suebi took part of Gallaecia, where they later established a kingdom. After the Vandals and Alans left for North Africa, the Suebi took control of much of the Iberian Peninsula. However, Visigothic campaigns took much of this territory back. The Visigoths emerged victorious in the wars that followed, and eventually annexed Gallaecia.