Under the rule of Estañol the Catalans not only held their ground in Attica and Bœotia, but increased the terror of their name among all their neighbours. In vain the Pope appealed to King James II of Aragon to drive them out of Attica; in vain he described the late Duke Walter as a “true athlete of Christ and faithful boxer of the Church”; the king’s politic reply was to the effect that the Catalans, if they were cruel, were also Catholics, who would prove a valuable bulwark of Romanism against the schismatic Greeks of Byzantium[89]. The appointment of King Frederick II’s natural son, Don Alfonso Fadrique (or Frederick), as “President of the fortunate army of Franks in the Duchy of Athens” yet further strengthened the position of the Company. The new vicar-general was a man of much energy and force of character; and during his thirteen years’ administration the Catalan state attained its zenith. Practically independent of Sicilian influence—for the nominal Duke Manfred died in the year of Fadrique’s appointment, and his younger brother William was likewise a minor—he acquired a stronger hold upon Attica, and at the same time a pretext for intervention in the affairs of Eubœa, by his marriage with Marulla, the heiress of Boniface of Verona, “one of the fairest Christians in the world, the best woman and the wisest that ever was in that land,” as Muntaner, who knew her, enthusiastically describes her. With her Fadrique received back, as her dowry, the thirteen castles which Guy II of Athens had bestowed upon her father on that memorable day at Thebes.