Eutharic Cilliga was an Ostrogothic prince from Iberia who, during the early 6th century, served as Roman Consul and "son in weapons" alongside the Byzantine emperor Justin I. He was the son-in-law and presumptive heir of the Ostrogoth king Theodoric the Great but died in AD 522 at the age of 42 before he could inherit Theodoric's title. Theodoric claimed that Eutharic was a descendant of the Gothic royal house of Amali and it was intended that his marriage to Theodoric's daughter Amalasuintha would unite the Gothic kingdoms, establish Theodoric's dynasty and further strengthen the Gothic hold over Italy.

Justin I, also called Justin the Thracian, was Eastern Roman emperor from 518 to 527. Born to a peasant family, he rose through the ranks of the army to become commander of the imperial guard and when Emperor Anastasius died, he out-maneouvered his rivals and was elected as his successor, in spite of being around 68 years old. His reign is significant for the founding of the Justinian dynasty that included his eminent nephew, Justinian I, and three succeeding emperors. His consort was Empress Euphemia.