[Footnote 14: Vat. Urb. MSS. No. 818, f. 5. Sanuto has preserved a letter which he says gave the first authentic information of the sack to the combined leaders, and which urges them to exertion in most pressing terms. It will be found in II. of the Appendix, with two other letters detailing the principal incidents of that direful event in terms which, though in a great measure anticipated by our narrative, show the impression made by them at the time, and probably conveyed the fullest information of the catastrophe to the Duchess of Urbino and to the Emperor. See the Pontiff's brieves illustrating his feeble policy, No. I.] At length an advance was agreed upon, and on the 20th the head-quarters were at Isola di Farnese, nine miles from Rome, the Duke having marched by Nepi, and Saluzzo by Bracciano. Here distracted counsels again prevailed, and, in answer to urgent representations of his confederates, that the Pope must at all hazards be relieved, Francesco Maria ordered a muster of the army, which showed twelve to fifteen thousand men. Letters to the same purpose arriving from the Signory, and a message declaring that Clement had broken off a negotiation with his oppressors on the strength of speedy assistance, he at length consented that Rangone should once more attempt to bring off his Holiness, by leading a division to Monte Mario, whilst he advanced to his support with the main body as far as Tre Capanne. But on pretext of making a previous examination of the ground, he wasted so much time, that night had fallen when they reached that place; and the expedition being thereby delayed until morning, a general feeling then prevailed that the force was inadequate, and the troops were thereupon withdrawn. An even less creditable version of this evolution is given by an eye-witness in the Duke's service, who attributes as its motive the seizure of a quantity of booty, which had been removed from Rome to Monte Rotondo; adding that, on seeing signal fires over the Campagna, and hearing a vague rumour that the enemy were approaching in force, the Duke suddenly faced about and regained his quarters, his men in sad plight, and the rear stripped to their shirts by some skirmishers.[15]