Euphrasius, the bishop of Poreč, imposes a variety of taxes, including the tithe and the ecclesiastical quartese (the quarter of the tithe) on the citizens of his bishopric. The document aimed at proving the episcopal lordship over the city of Poreč and fixing the tributes due to the Church of Poreč, forged in the first half of the 13th century (before 1222).
Iustinianus, imperator Imperii Romani Orientalis vulgo Imperium Byzantinum nuncupatur
Emperor Justinian I has Pope Vigilius I consecrate Maximian, a deacon from Pula, as the new bishop of Ravenna; once installed as bishop, Maximian embarks on several architectural projects, including the building of the Santa Maria Formosa church in Pula (narrative accounts from the Life of Saint Maximian written by Agnellus of Ravenna in his Book of the Pontiffs of the Church of Ravenna).
Emperor Justinian I appoints his cousin Germanus as the commander-in-chief of his army fighting against King Totila in Italy; the promise of a renewed war effort against the Ostrogoths under a famous military commander encourages men across the region to rally under imperial banner as they journey to Istria, awaiting the arrival of Germanus (narrative accounts from Procopius of Cesearea's History of the Wars).