Background
He was the eldest son of the Byzantine Emperor Heraclius and his first wife Eudokia.
He was the eldest son of the Byzantine Emperor Heraclius and his first wife Eudokia.
Constantine"s birth name was Heraclius Novus Constantinus, (Greek: Ἡράκλειος νέος Κωνσταντῖνος), which was also the official name under which he reigned. The name Constantine became established in later Byzantine texts as short for the Emperor and has become standard in modern historiography. As the couple were second cousins, the marriage was technically incestuous, but this consideration must have been outweighed by the advantages of the match to the family as a whole.
In comparison, Constantine"s marriage was far less scandalous than that of his father"son
Their second child was another son, Theodosius. They also had a daughter named Manyanh who later married the last Sassanid King of Persia, Yazdgerd III and had issue.
Constantine became senior Emperor when his father died in 641. He reigned together with his younger half-brother Heraklonas, the son of Martina.
Indeed, he died of tuberculosis after only four months, leaving Heraklonas sole emperor.
Constans II, who succeeded as emperor
Theodosius
Manyanh, who married Yazdgerd III, last Sassanid Emperor of Persia.