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Alexios IV Megas Komnenos or Alexius IV ((ギリシア語:Αλέξιος Δ΄ Μέγας Κομνηνός, ''Alexios IV Megas Komnēnos'')), (1382–1429), Emperor of Trebizond from March 5, 1417 to October 1429.〔Although some secondary sources date Alexios' death to 1449, William Miller (("The Chronology of Trebizond" ), ''The English Historical Review'', 38 (1923), pp. 408f) provides the primary sources showing that 1429 is the correct date. More recently, V. Laurent ("L'Assassinat d'Alexis IV, empereur de Trebizonde", ''Archeion Pontou'', 20 (1955), pp. 131-143) has narrowed the date of his death to September/October 1429.〕 He was the son of Emperor Manuel III and Gulkhan-Eudokia of Georgia. == Reign == Alexios IV had been associated in authority and given the title of ''despotes'' by his father as early as 1395. Nevertheless, the two quarreled as Alexios was impatient to assume supreme power; William Miller compared this to "the first three sovereigns of the House of Hanover" for whom "the heir-apparent always quarrelled with his father."〔William Miller, ''Trebizond: The last Greek Empire of the Byzantine Era: 1204-1461'', 1926 (Chicago: Argonaut, 1969), p. 73〕 When his father died in 1417, Alexios was accused by some of having expedited his death. Alexios inherited a conflict with the Genoese, who defeated the fleet of Trebizond and seized a local monastery, which they converted into a fortress. By 1418 he had signed a peace agreement and paid reparations to the Genoese until 1422. A new dispute arose over the emperor's obligations in 1425 and was not resolved until 1428. Relations with the Republic of Venice were generally better.〔Miller, ''Trebizond'', p. 79〕 After the death of Tamerlane, most of Asia Minor descended into chaos. Kara Yusuf, ruler of the Kara Koyunlu or "Black Sheep" Turks, devastated much of Armenia and defeated the Emir of Arsinga and the chieftain of the Ak Koyunlu or White Sheep Turks. Alexios sought to avoid hostility by marrying off daughters to his powerful Muslim neighbors. One daughter was married to Kara Yusuf's son Jihan Shah in c.1420, and Alexios agreed to pay his son-in-law the same amount of tribute that had previously been due to Tamerlane.〔Miller, ''Trebizond'', p. 80〕 Another daughter was possibly married to Ali, son of Kara Yülük Osman, the ruler of Ak Koyunlu, though Osman himself was likely the groom. Alexios' marital policy also extended to his Christian neighbors, and his daughter Maria of Trebizond was married off to the Byzantine Emperor John VIII Palaiologos in 1428.〔 According to George Finlay, Alexios IV spent much of his time in pursuit of pleasure and accomplished relatively little,〔Finlay, ''The History of Greece and the Empire of Trebizond, (1204-1461)'' (Edinburgh: William Blackwood, 1851), p. 398〕 although there is no evidence in contemporary sources for this claim. Following tradition, he granted his eldest son, John IV, the courtly title of ''despotes'' in 1417. Despite this, relations deteriorated between father and son, and in 1426 John murdered Alexios' Treasurer, alleging an affair between him and the Empress Theodora Kantakouzene. He also attempted to kill his parents but the nobles intervened and prevented him, and John fled to Georgia.〔Miller, ''Trebizond'', p. 81〕 When Alexios IV's wife Theodora died in 1426, he was so distraught that Bessarion wrote him no less than three monodias, which help to shed some light on this otherwise dark period lacking in sources.〔 Due to John's disloyalty and usurpation, Alexios IV made his younger son Alexander of Trebizond ''despotes''. Eventually John left Georgia for the Genoese colony at Caffa, where he enlisted a galley and its crew to help him recover his position in Trebizond. One day in October 1429, the galley and its crew landed John near Trebizond; Alexios IV marched out to meet his son, only to be murdered during the night by nobles who had been won over by John.〔Miller, ''Trebizond'', p. 82〕 Alexander fled Trebizond; the Venetian traveller Pero Tafur encountered him in Constantinople around October of that year, living with his sister Maria.〔A. Vasiliev, "Pero Tafur, a Spanish Traveler of the Fifteenth Century and his Visit to Constantinople, Trebizond, and Italy", ''Byzantion'', 7 (1932), p. 98〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Alexios IV of Trebizond」の詳細全文を読む スポンサード リンク
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