Emperor Heraclius was sole ruler until 22 January 613, when he crowned his son Constantine III as co-emperor.
Towards the end of his reign, Heraclius also named his young son Constantine Heraclius (commonly known by the diminutive Heraklonas) as Augustus on 4 July 638.
On Heraclius's death on 11 February 641, Constantine III and Constantine Heraclius were proclaimed joint emperors. Constantine III died shortly after, leaving Constantine Heraclius as sole ruler.
|Country||Eastern Roman Empire (Byzantine Empire)|
|From||11 February 641|
|To||20 April 641|
|Personal Information||Emperor Constantine III of the Eastern Roman Empire
Emperor Constantine Heraclius of the Eastern Roman Empire