Constantine IV [SEP] father
Constantine IV
Constantine IV (; ; c. 652 – 14 September 685), sometimes incorrectly called Pogonatos (Πωγωνάτος), "the Bearded", out of confusion with his father, was Byzantine Emperor from 668 to 685. His reign saw the first serious check to nearly 50 years of uninterrupted Islamic expansion, while his calling of the Sixth Ecumenical Council saw the end of the monothelitism controversy in the Byzantine Empire.
Early career.
The eldest son of Constans II, Constantine IV had been named a co-emperor
Heraclius (son of Constantine IV)
Heraclius (the Latin of his Greek name Herakleios) was born between 667 and 685, and was the son, and second of two children, of Byzantine Emperor Constantine IV and his wife, Empress Anastasia.
Unlike his older brother Justinian II, he was never made co-emperor under his father, and was never emperor. In contrast, the brothers of his father, Heraclius and Tiberius, had been crowned "Augusti" with Constantine IV during the reign of their father