Euric killed his older brother Theoderic II to become King of the Visigoths. Theoderic II had killed their older brother Thorismund to become king.
Euric, also known as Evaric, Erwig, or Eurico in Spanish and Portuguese, (c. 415–484), was the younger brother of Theodoric II and ruled as king of the Visigoths, with his capital at Toulouse, from 466 until his death in 484 .
He inherited a large portion of the Visigothic possessions in the Aquitaine region of Gaul, an area that had been under Visigothic control since 415. Over the decades the Visigoths had gradually expanded their holdings at the expense of the weak Roman government, advancing well into Hispania in the process.
Upon becoming king, Euric defeated several other Visigothic kings and chieftains in a series of civil wars and soon became the first ruler of a truly unified Visigothic nation. Taking advantage of the Romans' problems, he extended Visigothic power in Hispania, driving the Suevi into the northwest of Iberia. By the time the western empire ended in 476 he controlled nearly the entire Iberian peninsula.
In 470 Euric defeated an attempted invasion of Gaul by the Celtic magnate Riothamus and expanded his kingdom even further north, possibly as far as the Somme River, the March of Frankish territory.
Euric 
