Battle of Adda: The Goths under Theodoric the Great and his ally Alaric II defeat the forces of Odoacer on the Adda River, near Milan.

The Goths were a Germanic people who played a major role in the fall of the Western Roman Empire and the emergence of medieval Europe. They were first reported by Graeco-Roman authors in the 3rd century AD, living north of the Danube in what is now Ukraine, Moldova, and Romania. From here they conducted raids into Roman territory, and large numbers of them joined the Roman military. These early Goths lived in the regions where archaeologists find the Chernyakhov culture, which flourished throughout this region during the 3rd and 4th centuries.

Theodoric the Great, also called Theodoric the Amal, was king of the Ostrogoths (475–526), and ruler of the independent Ostrogothic Kingdom of Italy between 493 and 526, regent of the Visigoths (511–526), and a patrician of the Eastern Roman Empire. As ruler of the combined Gothic realms, Theodoric controlled an empire stretching from the Atlantic Ocean to the Adriatic Sea. Though Theodoric himself only used the title 'king' (rex), some scholars characterize him as a Western Roman emperor in all but name, since he ruled a large part of the former Western Roman Empire described as a Res Publica, had received the former Western imperial regalia from Constantinople in 497 which he used, was referred to by the imperial title princeps by the Italian aristocracy and exercised imperial powers recognized in the East, such as naming consuls.

Alaric II was the King of the Visigoths from 484 until 507. He succeeded his father Euric as King of the Visigoths in Toulouse on 28 December 484; he was the great-grandson of the more famous Alaric I, who sacked Rome in 410. He established his capital at Aire-sur-l'Adour in Aquitaine. His dominions included not only the majority of Hispania but also Gallia Aquitania and the greater part of an as-yet undivided Gallia Narbonensis.