him and his mother in its treaties with Athens, and when Guglielma died, in 1358, after a long and varied career, her son received back the confiscated property of his late half-sister[354]. The peaceful reign of Francesco was a great contrast to the stormy career of his mother. His Catalan neighbours, divided by the jealousies of rival chiefs, had no longer the energy for fresh conquests. The establishment of a Serbian kingdom in Thessaly only affected the Marquess in so far as it enabled him to bestow his daughter’s hand upon a Serbian princelet[355]. The Turkish peril, which was destined to swallow up the Marquisate in the next generation, was, however, already threatening Catalans, Serbs, and Italians alike, and accordingly Francesco Giorgio was one of the magnates of Greece whom Pope Gregory XI invited to the Congress on the Eastern question, which was summoned to meet at Thebes[356] on October 1, 1373. But when the Athenian duchy, of which he was a tributary, was distracted by a disputed succession between Maria, Queen of Sicily, and Pedro IV of Aragon, the Venetian Marquess, chafing at his vassalage and thinking that the moment was favourable for severing his connexion with the Catalans, declared for the Queen. He was, in fact, the most important member of the minority which was in her favour, for we are told that “he had a very fine estate,” and we know that he had enriched himself by mercantile ventures. Accordingly he assisted the Navarrese Company in its attack upon the duchy, so that Pedro IV wrote in 1381 to the Venetian bailie of Negroponte, begging him to prevent his fellow-countryman at Boudonitza from helping the King’s enemies. As the Marquess had property in the island, he had given hostages to fortune. The victory of the Aragonese party closed the incident, and the generous policy of the victors was doubtless extended to him. But in 1388 the final overthrow of the Catalan rule by Nerio Acciajuoli made the Marquisate independent of the Duchy of Athens[357]. In feudal lists—such as that of 1391—the Marquess continued to figure as one of the temporal peers of Achaia[358], but his real position was that of a “citizen and friend” of Venice, to whom he now looked for help in trouble.