Note 37 — Chapter XIV · THE CONTEST OF THE EASTERN EMPIRE AND THE CALIPHATE 641-717

There is no doubt that his real name was Constantinus, or in full Flavius Heraclius Constantinus. But the Western historians, and some of those of the East, call him Constans. Probably this was a mere convenience to distinguish him from his father, Heraclius Constantinus, and his son, Constantine IV. (or V.).