It was Guidobaldo's policy to maintain with the Holy See those amicable relations which his second marriage had established, and he had accordingly, on the death of Paul III., sent some troops to Perugia, in order to secure the quiet succession of Julius III. This being effected, he went to Rome on a visit of congratulation to the new Pontiff, accompanied by Aretino, whose venal appetites were ever on the watch for opportunities of bringing his sycophancy to a good market. The Pope disappointed him of the anticipated guerdon, but, aware of the ready transition from adulation to slander, disarmed his tongue of its venom by a gracious accolade, kissing the forehead of this "scourge of princes." The first token of favour bestowed on the Duke by his Holiness was his nomination as governor of Fano in 1551. In the following year he spent some time at Verona with the Venetian army, accompanied by his boy, who there had an illness which occasioned him much anxiety. This command was a somewhat anomalous one, with the title of Governor of the Republican forces, which he vainly negotiated to exchange for that of General. Disgusted by this refusal, he listened to an overture from his brothers-in-law for transferring his services to the French King. Ottavio Farnese, now Duke of Parma, apprehending some hostile intentions from the imperialists, had applied, in 1551, to the Pope for succours, in order to guarantee his possession of that state; but, unable to spare reinforcements or money, Julius had recommended him to take his own measures for defence. Acting on this advice, he had recourse to Henry II., from whom he accepted a condotta, on condition of Parma being supplied with a French garrison. Such a step could not fail to alarm the Emperor, who, representing that Ottavio had, in fact, made over his duchy to France, brought upon him the thunders of the Vatican. The inducement offered to Guidobaldo by the Farnesi for following them into Henry's service was that the King should renounce the supposed claims upon Urbino competent to his wife Caterina de' Medici, in right of her father Lorenzo, its usurping Duke. But the decided measures adopted by the Pontiff cut short this negotiation, and we hear no more of pretensions which were doubtless vamped up to serve a temporary purpose. Although the Pontiff was nominally a party to the petty war which ensued in Lombardy, it was, in fact, but a chapter in the prolonged struggle between the houses of Hapsburg and Bourbon, with which our narrative has no concern. Another episode in the same contest was more alarming to Central Italy, and, when Tuscany became involved in the strife, it seemed well for Julius to stand on the defensive. Accordingly, in January, 1553, he named Guidobaldo captain-general of the Church, who, in April, proceeded to Rome for his installation; and accompanied by a brilliant staff, reviewed the pontifical troops.