利用者:安息香酸/砂場5
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en:William of Villehardouinのoldid= 1145207348版からのコピペ
ギヨーム2世 | |
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ギヨーム2世の治世下で鋳造されたドゥニエ硬貨 | |
在位期間 1246年–1278年 | |
先代 | ジョフロワ2世 |
次代 | カルロ1世 |
出生 |
1211年ごろ カラマタ |
死亡 | 1278年5月1日 |
王室 | ヴィルアルドゥアン家(英語版) |
父親 | ジョフロワ1世・ド・ヴィルアルドゥアン |
母親 | エリザベト |
配偶者 |
|
子女 | |
信仰 | カトリック教 |
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ギヨーム2世・ド・ヴィルアルドゥアン(フランス語: Guillaume de Villehardouin,1211年ごろ-1278年5月1日)は第4代アカイア公(在位1246年-1278年)である。彼は先代のアカイア公ジョフロワ1世・ド・ヴィルアルドゥアンの次男であり、兄のジョフロワ2世・ド・ヴィルアルドゥアンの治世の頃にはカラマタ男爵領(英語版)を知行していた。兄ジョフロワ2世が彼の上級君主ラテン皇帝ボードゥアン2世の宿敵ニケーア帝国への軍事遠征に参加した際には、摂政としてジョフロワ2世の代わりに公国を統治した。そして1246年夏、ギヨーム2世は後継を残すことなく亡くなったジョフロワ2世の後を継いでアカイア公に就任した。
William of Villehardouin (フランス語: Guillaume de Villehardouin; Kalamata, c. 1211 – 1 May 1278) was the fourth prince of Achaea in Frankish Greece, from 1246 to 1278. The younger son of Prince Geoffrey I, he held the Barony of Kalamata in fief during the reign of his elder brother Geoffrey II. William ruled Achaea as regent for his brother during Geoffrey's military campaigns against the Greeks of Nicaea, who were the principal enemies of his overlord, the Latin Emperor of Constantinople Baldwin II. William succeeded his childless brother in the summer of 1246. Conflicts between Nicaea and Epirus enabled him to complete the conquest of the Morea in about three years. He captured Monemvasia and built three new fortresses, forcing two previously autonomous tribes, the Tzakones and Melingoi, into submission. He participated in the unsuccessful Egyptian crusade of Louis IX of France, who rewarded him with the right to issue currency in the style of French royal coins.
In the early 1250s, William was the most powerful ruler of Frankish Greece. Most neighboring Frankish rulers acknowledged his suzerainty. In 1255, he laid claim to the northern terziere, or third, of the Lordship of Negroponte on the island of Euboea. Although the two other rulers of Negroponte were his vassals, they rejected his claim. They gained the support of Venice, Guy I de la Roche, Lord of Athens, and other Frankish rulers. The conflict developed into a war of succession that caused much destruction of Euboea and mainland Greece. After William's victory in Attica in May 1258, Guy and his allies surrendered. Guy was tried for his disloyalty but was allowed to keep his Achaean fiefs.
A succession crisis in Nicaea prompted the Epirote ruler Michael II Komnenos Doukas to form an anti-Nicaean coalition with William and Manfred of Sicily. In the summer of 1259, William and Michael assembled the bulk of their armies and marched as far as Pelagonia to fight the Nicaeans. The Frankish and Epirote troops could not cooperate effectively, and archers from the enemy camp harassed them continuously. After the Epirotes abandoned their allies unexpectedly, the Nicaeans inflicted a decisive defeat on the Franks. William fled from the battlefield, but he was captured and sent to Nicaea. He was still in prison when Nicaean troops seized Constantinople and destroyed the Latin Empire in July 1261. The triumphant Byzantine emperor Michael VIII Palaiologos released William in return for three southern Morean fortresses in late 1261. The possession of the three forts facilitated further Byzantine expansion, and William was forced to seek external support. With the approval of Baldwin II, he swore fealty to the Angevin king of Sicily, Charles I. William acknowledged Charles and his descendants as his heirs in the Treaty of Viterbo on 24 May 1267. Charles sent troops to Achaea and with their help, William was able to resist Byzantine invasions during the last years of his reign.