Constantine IV - Early Career

Early Career

The eldest son of Constans II, Constantine IV had been named a co-emperor with his father in 654. He had been given the responsibility of managing the affairs at Constantinople during his father’s extended absence in Italy and became senior Emperor when Constans was assassinated in 668. His mother was Fausta, daughter of patrician Valentinus.

The first task before the new Emperor was the suppression of the military revolt in Sicily under Mezezius which had led to his father's death. Within 7 months of his accession, Constantine IV had dealt with the insurgency with the support of Pope Vitalian. But this success was overshadowed by troubles in the east.

As early as 668 the Caliph Muawiyah I, after receiving an invitation from Saborios, the commander of the troops in Armenia to help him overthrow the Emperor at Constantinople, sent an army under his son Yazid against the Eastern Roman Empire. Yazid reached as far as Chalcedon and took the important Byzantine center Amorion. Although the city was quickly recovered, the Arabs next attacked Carthage and Sicily in 669. In 670 the Arabs captured Cyzicus and set up a base from which to launch further attacks into the heart of the Empire. Their fleet captured Smyrna and other coastal cities in 672. Finally, in 672, the Arabs sent a large fleet to attack Constantinople by sea. While Constantine was distracted by this, the Slavs unsuccessfully attacked Thessalonika.