Heraclius
Heraclius (; c. 575 – 11 February 641), was Eastern Roman emperor from 610 to 641. His rise to power began in 608, when he and his father, Heraclius the Elder, the exarch of Africa, led a revolt against Phocas, an unpopular emperor. Later in Heraclius' reign officialy used "Basileus" partially replacing the traditional "Imperator, Caesar and Augustus". He placed Greek as the official languange of the Eastern Roman Empire in place of Latin and even promoting Greek Culture but nevertheless had kept much of ancient roman traditions.