Leo VI the Wise

Leo VI, also known as Leo the Wise (Greek: Λέων ὁ Σοφός, romanized: Léōn ō Sophós; 19 September 866 – 11 May 912), was Byzantine emperor from 886 to 912. The second ruler of the Macedonian dynasty (although his parentage is unclear), he was reportedly very well read, leading to his epithet. During his reign, the renaissance of letters, begun by his predecessor Basil I, continued; but the empire also saw several military defeats in the Balkans against Bulgaria and against the Arabs in Sicily and the Aegean. His reign also witnessed the formal discontinuation of several ancient Roman institutions, such as the separate office of Roman consul.

Source: Wikipedia — https://en.wikipedia.org/wiki/Leo_VI_the_Wise