While these occurrences were passing, the new Royal Audience, after a faithful discharge of its commission, had been superseded by the arrival of a viceroy, the first ever sent to New Spain. Cortés, though invested with similar powers, had the title only of Governor. This was the commencement of the system, afterwards pursued by the crown, of intrusting the colonial administration to some individual whose high rank and personal consideration might make him the fitting representative of majesty. The jealousy of the court did not allow the subject clothed with such ample authority to remain long enough in the same station to form dangerous schemes of ambition, but at the expiration of a few years he was usually recalled, or transferred to some other province of the vast colonial empire. The person now sent to Mexico was Don Antonio de Mendoza, a man of moderation and practical good sense, and one of that illustrious family who in the preceding reign furnished so many distinguished ornaments to the Church, to the camp, and to letters. The long absence of Cortés had caused the deepest anxiety in the mind of his wife, the marchioness of the Valley. She wrote to the viceroy immediately on his arrival, beseeching him to ascertain, if possible, the fate of her husband, and, if he could be found, to urge his return. The viceroy, in consequence, despatched two ships in search of Cortés, but whether they reached him before his departure from Santa Cruz is doubtful. It is certain that he returned safe, after his long absence, to Acapulco, and was soon followed by the survivors of his wretched colony. Undismayed by these repeated reverses, Cortés, still bent on some discovery worthy of his reputation, fitted out three more vessels, and placed them under the command of an officer named Ulloa. This expedition, which took its departure in July, 1539, was attended with more important results. Ulloa penetrated to the head of the Gulf, then, returning and winding round the coast of the peninsula, doubled its southern point, and ascended as high as the twenty-eighth or twenty-ninth degree of north latitude on its western borders. After this, sending home one of the squadron, the bold navigator held on his course to the north, but was never more heard of.[276]