Constantine IV ruled as emperor of the Byzantine empire from 668 to 685 CE. His reign is best remembered today for the five-year Arab siege of Constantinople from 674 CE, which the Byzantines resisted thanks to their strong fortifications...
A 7th century CE mosaic depicting the Byzantine emperor Constantine IV (r. 668-685 CE) and entourage in the basilica of Sant'Apollinare, in Classe, Ravenna, Italy.
Constantine I, aka Constantine the Great, was Roman emperor from 306 to 337 CE. Realizing that the Roman Empire was too large for one man to adequately rule, Emperor Diocletian (284-305 CE) split the empire into two, creating a tetrachy or...
Constantine’s Conversion to Christianity
Constantine I (Flavius Valerius Constantinus) was Roman emperor from 306-337 CE and is known to history as Constantine the Great for his conversion to Christianity in 312 CE and his subsequent Christianization of the Roman Empire. His conversion...
Constantine VII was Byzantine emperor from 945 until 959 CE. Sometimes known as Constantine Porphyrogennetos because of his birth in the purple chamber of the royal palace, he was served by various regents from 912 CE until reigning in his...
Built in the seventh century BCE, the ancient city of Byzantium proved to be a valuable city for both the Greeks and Romans. Because it lay on the European side of the Strait of Bosporus, the Emperor Constantine understood its strategic importance...
The Byzantine Emperor ruled as an absolute monarch in an institution which lasted from the 4th to 15th century CE. Aided by ministers, high-ranking nobility, and key church figures, the emperor (and sometimes empress) was commander-in-chief...
Constantine X Doukas
Constantine X Doukas was the ruler of the Byzantine Empire from 1059 to 1067 CE. During his reign, the Byzantine Empire was attacked by emerging enemies on all sides, including the Normans in Italy and the Seljuk Turks in Armenia and Anatolia...
Constantine VI, also known as Constantine "the Blinded”, was emperor of the Byzantine Empire from 780 to 797 CE, although for most of his reign his mother, Irene the Athenian, ruled as regent. When Constantine did finally get a...
The Byzantine Empire, often called the Eastern Roman Empire or simply Byzantium, existed from 330 to 1453. With its capital founded at Constantinople by Constantine I (r. 306-337), the Empire varied in size over the centuries, at one time...