When the ransom had been settled, the three French and Burgundian envoys who had been treating with Bayezid, embarked for Lesbos, escorted by Francesco and Nicolò and accompanied by one of the ransomed prisoners, who took with him to Burgundy a natural son of Francesco, destined to become the grandfather of Giuliano Gattilusio, the terrible corsair of the next century[547]. The rest of the prisoners followed early in July, and remained for six weeks the guests of Francesco and his lady, a noble dame of gentle breeding and European accomplishments, acquired at the court of Marie de Bourbon, titular Empress of Constantinople and Princess of Achaia, in whose society she had been educated. Feeling herself highly honoured at the presence of the Comte de Nevers and his companions in the castle of Lesbos, she clothed them with fine linen and cloth of Damascus, according to the fashion of the Levant, not forgetting to replenish the wardrobe of their retainers, while her husband and his uncle rendered them every honour and assisted them in their necessity. The visit terminated in the middle of August, when two galleys, equipped by the Knights of Rhodes, transported them to that island, their next stage on the homeward voyage. Their generous host stood on the shore till the Rhodian galleys had sunk beneath the horizon[548]. A few hours earlier he had obtained the signature of a treaty which might confer a solid advantage upon his own family and give an illusory hope of future glory to his departing guests. His daughter Eugenia had just married John Palaiologos, Despot of Selymbria, the Emperor Manuel II’s nephew and rival. Through the agency of Francesco this potentate ceded his claims to the Empire to King Charles VI of France in return for a French castle and a perpetual annuity of 25,000 gold ducats[549]. Thus in Lesbos, on the morrow of Nikopolis, the French could dream of re-establishing the long extinct Latin Empire of Romania!