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The Siege of Berat in Albania by the forces of the Angevin Kingdom of Sicily against the Byzantine garrison of the city took place in 1280–1281. Berat was a strategically important fortress, whose possession would allow the Angevins access to the heartlands of the Byzantine Empire. A Byzantine relief force arrived in spring 1281, and managed to ambush and capture the Angevin commander, Hugo de Sully. Thereupon, the Angevin army panicked and fled, suffering heavy losses in killed and wounded as it was attacked by the Byzantines. This defeat ended the threat of a land invasion of the Byzantine Empire, and along with the Sicilian Vespers marked the end of the Western threat to reconquer Byzantium. ==Background== Ever since the Emperor Michael VIII Palaiologos (r. 1259–1282) recovered Constantinople from the Latin Empire in 1261, the restored Byzantine Empire faced the threat of a Latin crusade to reclaim the city. The antagonistic Greek Despotate of Epirus and the Latin states of southern Greece, fearful of the Byzantine resurgence, sought aid from the Kingdom of Sicily, first under Manfred of Sicily (r. 1258–1266), and after 1266 under the ambitious Charles of Anjou (r. 1266–1285), who quickly established himself as Byzantium's chief antagonist. Countering the Angevin ruler's alliances and efforts to conquer Byzantium would occupy the remainder of Michael VIII's reign.〔; .〕 In 1258, the Sicilians took possession of the island of Corfu and the Albanian coast, from Dyrrhachium to Valona and Buthrotum and as far inland as Berat. This gave Manfred a strategically vital beachhead in the Balkans, controlling the western terminus of the great Via Egnatia, the main overland route to Constantinople. Already in the 11th and 12th centuries, the same area had been the target of the Normans of southern Italy in their attacks on the Empire.〔; .〕 After overthrowing Manfred, in the Treaty of Viterbo (1267) Charles secured his recognition as Manfred's heir. In 1272, the Latin notables who had held the fortresses of Valona, Kanina, and Berat for Manfred surrendered them to Charles, and soon afterwards Charles's troops took Dyrrhachium too. Having secured the support of many Albanian chieftains, Charles proclaimed the establishment of the Kingdom of Albania in the same year.〔; .〕 Michael VIII countered the emerging threat by a diplomatic mission to the Papacy, which in the Second Council of Lyon (1274) agreed to the union of the Orthodox and Catholic churches, estranged after the Great Schism of 1054, and thereby placed Michael and his empire under papal protection. Taking advantage of Charles's entanglement in the conflict between Guelphs and Ghibellines in Italy, in spring 1274 Michael launched an attack against Angevin holdings in Albania. Berat and Buthrotum were taken and Charles's troops were pushed back from the hinterland to the two ports of Valona and Dyrrhachium. Although these were assaulted several times in 1274–1275, they remained in Angevin hands.〔; ; .〕 By 1279 however, Charles had established his control not only over the Latin states of Greece (after 1278 he was the Prince of Achaea), but also received the submission and vassalage of Nikephoros I, Despot of Epirus.〔; .〕 In August 1279, in preparation for resuming his offensive against Michael along the Via Egnatia, Charles appointed as his vicar-general in Albania the Burgundian Hugo de Sully. Over the next year, Sully received a steady flow of supplies, siege equipment and reinforcements.〔; .〕 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「Siege of Berat (1280–81)」の詳細全文を読む スポンサード リンク
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