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John V, Byzantine emperor

(Encyclopedia)John V (John Palaeologus) pālˌēŏlˈəgəs [key], 1332–91, Byzantine emperor (1341–91), son and successor of Andronicus III. Forced to fight John VI (John Cantacuzene), who usurped the throne d...

Jovian

(Encyclopedia)Jovian (Flavius Claudius Jovianus) jōˈvēən [key], c.331–364, Roman emperor (363–64). The commander of the imperial guard under Julian the Apostate in his Persian campaign, Jovian was proclaime...

Jusserand, Jean Jules

(Encyclopedia)Jusserand, Jean Jules zhäN zhül zhüsəräNˈ [key], 1855–1932, French diplomat and author, b. Lyon. After service in London, Constantinople, and Copenhagen, he was ambassador to the United States...

Bessarion

(Encyclopedia)Bessarion bĕsârˈēən [key], 1395?–1472, Byzantine humanist, cardinal of the Roman Catholic Church. He was a leading figure at the Council of Ferrara-Florence, which he attended as metropolitan o...

Byzantine Empire

(Encyclopedia)CE5 CE5 Byzantine Empire (c.1000) Byzantine Empire, successor state to the Roman Empire (see under Rome), also called Eastern Empire and East Roman Empire. It was named after Byzantium, which Emp...

Hagia Sophia

(Encyclopedia)Hagia Sophia häˈjə sōfēˈə, hāˈjēə, [key] [Gr.,=Holy Wisdom] or Santa Sophia, Turkish Ayasofya, originally a Christian church at Constantinople (now İstanbul, Turkey) and then a mosque unde...

Nicephorus I

(Encyclopedia)Nicephorus I, d. 811, Byzantine emperor (802–11). He was minister of finance under Empress Irene, whom he deposed and succeeded. He improved the treasury, revised taxation, and vigorously asserted i...

Gelasius I, Saint

(Encyclopedia)Gelasius I, Saint jĭlāˈshēəs [key], d. 496, pope (492–96); successor of St. Felix III (also known as Felix II). He was a firm upholder of the papal supremacy in a dispute with Anastasius, the B...

Eunomius

(Encyclopedia)Eunomius yo͞onōˈmēəs [key], c.a.d. 333–a.d. 393?, bishop of Cyzicus (c.361), founder of the Eunomian heresy. He was a disciple and secretary of Aetius whose extreme Arianism he adopted. His fol...

Walter Sans Avoir

(Encyclopedia)Walter Sans Avoir, Fr. Gautier Sans-Avoir, d. 1096, French Crusader, known as Walter the Penniless. He joined Peter the Hermit as leader of an army to the Holy Land. In what came to be known as the Po...