southwestern Asia Minor, and there declared Theodosius, a tax collector, as Emperor Theodosius III. The Zuqnin Chronicle states that Theodosius ruled under the regnal name Constantine, his full name being "Theodosius Constantinus". The historian J. B. Bury suggests that he was selected at random for little more than the fact that he already had an imperial-sounding name, was inoffensive, obscure but respectable, and could easily be controlled by the Opsicians. Graham Sumner, a Byzantologist, suggests that Theodosius might be the same person as Theodosius, the son of Emperor Tiberius III, therefore explaining why he might have been chosen by the troops, as he would have legitimacy from his father, himself made emperor by a naval revolt. Theodosius, the son of Tiberius, was bishop of Ephesus by , and held this position until his death, sometime around 24 July 754, and was a leading figure of the iconoclastic Council of Hieria in 754. Byzantine historians Cyril Mango and Roger Scott do not view this theory as likely, as it would mean that Theodosius lived for thirty more years after his abdication. Cyril Mango proposed that it was actually Theodosius III's son who became bishop, rather than the son of Tiberius. Theodosius was allegedly unwilling to be emperor and according to Theophanes: He was acclaimed as Emperor Theodosius III by the troops of the Opsician Theme at Adramyttium in May 715. Anastasius led his army into Bithynia in the Opsician Theme to crush the rebellion. Rather than remaining to fight Anastasius, Theodosius led his fleet to Chrysopolis, across the Bosporus from Constantinople. From Chrysopolis, he launched a six-month-long siege of Constantinople, before supporters within the capital managed to open the gates for him, allowing him to seize the city in November 715. Anastasius remained at Nicaea for several months, before finally agreeing to abdicate and retire to a monastery. Reign One of Theodosius' first acts as emperor was to reinstate the depiction of the Sixth Ecumenical Synod in the Great Palace of Constantinople, which Emperor Philippicus Bardanes had removed, earning himself the epithet of "Orthodox" in the Liber Pontificalis for this action. Theodosius, whom Byzantine sources convey as being both unwilling and incapable, was viewed by many of his subjects as a puppet emperor of the troops of the Opsician Theme. Thus he was not recognized as legitimate by the Anatolic and the Armeniac Themes, under their respective (generals) Leo the Isaurian