John Doukas Palaiologos was a Byzantine aristocrat, brother to Emperor Michael VIII Palaiologos, who served as the commander-in-chief of the Byzantine army. He played a prominent part in his brother's
Michael VIII Palaiologos (r. 1259–1282)
William of Villehardouin
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William of Villehardouin 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 eld
John Palaiologos (brother of Michael VIII)
…Epirus, however, marshalled his forces, and was reinforced with men from the Principality of Achaea and the Latin states of southern Greece under Prince William II of Villehardouin himself, as well as a Sicilian contingent. Further forces were provided by Michael II's illegitimate son, John Doukas, ruler of Thessaly. The allied…
Ruins of the fortress of Mistra. William built it to complete the conquest of southeastern Morea in 1249, but he had to cede it to the Byzantines in 1261.
Gold hyperpyron of Michael VIII Palaiologos
The popes' palace in Viterbo. The 1267 Treaty of Viterbo established Charles I of Anjou's suzerainty over Achaea and his claim to succeed William in the principality.
Coin of William struck at Glarentza (inscription +:G:PRINCEACh, +:CLARENTIA)