Heraclius I redirects here. It can also refer to Heraclius I of Kakheti (1642–1709), a Georgian king, or to Patriarch Heraclius of Jerusalem (c. 1128–1190/1191).Heraclius (Latin: Flavius Heraclius Augustus, Greek: Φλάβιος Ἡράκλειος, Armenian: Հերակլես Փլավիոս, c. 575 – February 11, 641) was Byzantine Emperor from 610 to 641.He was responsible for introducing Greek as the Eastern Empire's official language.