Disappointed in a previous attempt to recover his rights, the young Emperor John V was at this time living in retirement on the island of Tenedos, then a portion of the Greek Empire and from its position at the mouth of the Dardanelles both an excellent post of observation and a good base for a descent upon Constantinople. During his sojourn there, a couple of Genoese galleys arrived, commanded by Francesco Gattilusio, a wealthy freebooter, who had sailed from his native city to carve out for himself, amidst the confusion of the Orient, a petty principality in the Thracian Chersonese, as others of his compatriots had twice done in Chios, as the Venetian nobles had done in the Archipelago 150 years earlier. The Emperor found in this chance visitor an instrument to effect his own restoration; the two men came to terms, and John V promised, that if Gattilusio would help him to recover his throne, he would bestow upon him the hand of his sister Maria—an honour similar to that conferred by Michael VIII upon Benedetto Zaccaria. The family of Gattilusio, which thus entered the charmed circle of Byzantine royalty, had already for two centuries occupied a prominent position at Genoa. One of the name is mentioned as a member of the Great Council in 1157; a second is found holding civic office in 1212 and 1214; and two others were signatories of the treaty of Nymphæum. Luchetto, grandfather of the first lord of Lesbos, was both a troubadour and a man of affairs, who went as envoy to Pope Boniface VIII to negotiate peace between his native city and Venice, served as _podestà_ of Bologna, Milan, Savona, and Cremona; and founded in 1295 the family church of San Giacomo at Sestri Ponente in memory of his father—a foundation which remained in the possession of the Gattilusj till 1483, and of which the Lesbian branch continued to be patron. Towards the end of the thirteenth century, the family seems to have turned its attention to the Levant trade, for a Gattilusio was among the Genoese who had sustained damage from the subjects of the Greek Emperor at that period, and by 1341 another member of the clan was a resident at Pera. In that year Oberto Gattilusio was one of the Genoese ambassadors, who concluded the treaty between the Republic and the Regent Anne of Savoy at Constantinople, and ten years later the same personage was sent on an important mission to all the Genoese commercial settlements in the East. The future ruler of Lesbos was this man’s nephew[524].