The Greek portion of the Morea was at this time in the hands of the three brothers of the Emperor John VI Palaiologos—Theodore II, Thomas, and Constantine—the third of whom was destined to die on the walls of Constantinople as last Emperor of the East. Politic marriages and force of arms soon extinguished the phantom of Frankish rule; and the Genoese baron, Centurione Zaccaria, nephew of Bordo de San Superan, who had succeeded his uncle as last Prince of Achaia, was glad to purchase peace by giving his daughter’s hand to Thomas Palaiologos with the remaining fragments of the once famous principality, except the family barony and the princely title, as her dowry. Thus, when Centurione died in 1432, save for the six Venetian stations, the whole peninsula was once more Greek. Unhappily, the union between the three brothers ended with the disappearance of the common enemy. Both Theodore and Constantine were ambitious of the imperial diadem; and, while the former was pressing his claims at Constantinople, the latter was besieging Mistra, having first sent the historian Phrantzes, his confidential agent in these dubious transactions, to obtain the Sultan’s consent. Assisted by his brother Thomas and a force of Frank mercenaries, Constantine was only induced to keep the peace by the intervention of the Emperor; till, in 1443, Theodore removed this source of jealousy by carrying out his long-cherished scheme of retiring from public life. He accordingly handed over the government of Mistra to Constantine and received in exchange the city of Selymbria on the Sea of Marmora, where he afterwards died of the plague.