Possibly the allusion may be to Pedro the Cruel of Castile, who was slain in 1369. The letters then disclose a matrimonial alliance which would have reconciled the Athenian claims of the house of Enghien with the ducal dominion over Catalan Athens exercised by Frederick III of Sicily. Don Antonio Rubió y Lluch has published two letters[149] of “the queen of Aragon,” wife of Pedro IV (not, as assumed by K. Konstantinides, Maria, queen of Sicily and duchess of Athens), from the former of which, dated 1379 and addressed to Archbishop Ballester of Athens, we glean some curious information about the relics which the cathedral of _Santa Maria de Setines_ (the Parthenon) then contained, and of which the Italian traveller Nicolò da Martoni made out a list sixteen years later[150]. The Catalan scholar has shown too that some years after the Florentine conquest of Athens a certain Bertranet, _un dels majors capitans del ducat d’Atenes_, recovered a place where was the head of St George, that is to say, Livadia[151]. The personage mentioned is Bertranet Mota, whose name occurs in the treaty with the Navarrese in 1390, as a witness to another document in the same year, in the list of fiefs in 1391, in Nerio Acciajuoli’s will, and in a letter of the bishop of Argos in 1394. He was a friend of Nerio’s bastard, Antonio; he had obviously helped the latter to recover Livadia from the Turks in 1393, and we are thus able to reconcile Chalkokondyles, who says that Bayezid had already annexed Livadia, with the clause in Nerio’s will leaving the important fortress to Antonio[152]. More interesting still, as showing the tenacity with which the kings of Aragon clung to the shadow of their rule over Athens, is the letter of Alfonso V to the despot Constantine Palaiologos (afterwards the last emperor of Constantinople), dated November 27, 1444, in which the king says that he has heard that Constantine has occupied Athens, and therefore requests him to hand over the two duchies of Athens and Neopatras to the Marquess of Gerace, his emissary[153].