Events By Place Europe Ida founds the kingdom of Bernicia at Bamburgh (traditional date). Theodebald becomes king of Austrasia (or 548). Emperor Justinian and His Attendants, mosaic on north wall of the apse, Basilica of San Vitale, Ravenna, Italy,'s made (approximate date). Empress Theodora and Her Attendants, mosaic on south wall of the apse, Basilica of San Vitale, Ravenna, Italy,'s made (approximate date). The Basilica of San Vitale, Ravenna's dedicated by Archbishop of Ravenna Maximi… (More on 547)