HERACLEONAS, east-Roman emperor (Feb.-Sept. 641), was the son of Heraclius (q.v.) and Martina. At the end of Heraclius' reign he obtainer 1 through his mother's influence the title of Augustus (638), and after his father's death was proclaimed joint emperor with his half-brother Constantine III. The premature death of Constantine, in May 641, left Heracleonas sole ruler. But a suspicion that he and Martina had murdered Constantine led soon after to a revolt, and to the mutilation and banishment of the supposed offenders. Nothing further is known about Heracleonas subsequent to 641.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)