When Gonzalo quitted Lima to encamp on the road towards the sea-port of Calao, he left Pedro Martin de Cicilia in charge of the city as provost-marshal. This man, who had attached himself to Gonzalo with much zeal from the very commencement of the troubles, was now about seventy years of age, yet healthy and vigorous, of a rough and cruel disposition, and entirely destitute of piety towards God or of loyalty to the sovereign. Gonzalo had given him orders to hang up every person he might find loitering in the city with out a written permission, or who might return thither from camp without a pass. Martin executed these rigorous orders with so much exactitude, that, meeting a person who came under the foregoing predicament, he had not sufficient patience to have him hanged, but dispatched him directly with his poignard. He generally went about the streets followed by the hangman, carrying a parcel of ropes, and loudly declared that he would hang up every one whom he found in the city without permission from Ganzalo.

One day several of the citizens came from the camp to the city, under the authority of a pass, to procure such provisions and other articles as they stood in need of, the principal persons among whom were Nicolas de Ribeira, who was alcalde or police judge of the city, Vasco de Guevara, Hernando Bravo de Lagunas, Francisco de Ampuero, Diego Tinoco, Alfonzo Ramirez de Sosa, Francisco de Barrionueva, Alfonzo de Barrionuevo, Martin de Menezes, Diego d'Escobar, and some others. After they had collected the articles of which they were in want, they left the city with their horses arms and servants; but, instead of returning towards the camp, they went off in the road for Truxillo. Being noticed by some spies, who gave immediate notice to Gonzalo, he caused them to be pursued by Juan de la Torre with a party of mounted musqueteers. At the distance of eight leagues from Lima, De la Torre came up with Vasco de Guevara and Francisco Ampuero, who had fallen behind with the intention of acting as a kind of rear guard, to give notice to the rest in case of a pursuit. They defended themselves courageously, and as their enemies could not take any certain aim, it being under night, they contrived to make their escape unwounded. De la Torre and his men found themselves unable to continue the pursuit with any chance of success, as their horses were already completely tired with their rapid march from camp. They returned, therefore, believing that, even if they were to get up with the fugitives, they would be unable to take them by force, as they were all men of quality, who would rather be slain than surrender. On their way back to camp, they fell in with Hernando Bravo, who had fallen behind his companions, and on bringing him a prisoner to Gonzalo he was ordered to immediate execution. Donna Ynez Bravo, who was sister to the prisoner and wife to Nicolas de Ribeira, one of the fugitives, on hearing the situation of her brother, hastened to the camp accompanied by her father, and threw herself at the feet of Gonzalo, whom she earnestly implored to spare the life of her brother. Being one of the most beautiful women of the country, and of the highest rank, and being seconded by most of the officers who served under Gonzalo, he at length allowed himself to be prevailed on to pardon her brother, who was the only person, during the whole subsistence of his usurpation, whom he forgave for a similar offence. On granting this pardon, Alfonzo de Caceres, one of the captains under Gonzalo, kissed his hand saying: "Illustrious prince! accursed be he who abandons you, or hesitates to sacrifice his life in your service." Yet, within three hours afterwards, Hernando Bravo and several others made their escape from the camp. Among these who now deserted were several persons of consideration who had attached themselves to Gonzalo from the very commencement of the troubles, so that their defection gave him infinite vexation and alarm, insomuch that hardly any one dared to speak to him, and he issued peremptory orders to put to death every person who might be found beyond the precincts of the camp.

On the same night, Captain Martin de Robles sent a message to Diego Maldonado, who had been alcalde of Cuzco, usually called the rich, intimating that Gonzalo had resolved in a consultation with his officers to put him to death. Maldonado very readily believed this information, as he had formerly been one of the inhabitants of Cuzco who made offer of their services to the late viceroy. Likewise, although then pardoned by Gonzalo, whom he accompanied in the march to Quito against the viceroy, he had fallen under new suspicions, and had even been put to the torture, on account of a letter which was dropt near Gonzalo, containing some very unpleasant truths; and although the real authors of that letter had been afterwards discovered, Maldonado could never forget the treatment he had suffered at that time. Besides this, he was the intimate friend of Antonio Altamirano, whom Gonzalo had recently put to death. Considering all these circumstances, Maldonado was so thoroughly convinced of the imminent danger in which he stood, that he immediately quitted his tent with only his sword and cloak, not even taking time to saddle a horse, though he had several good ones, or speaking to any of his servants. Though a very old man, he walked as fast as possible all night in a direction towards the sea, and concealed himself in the morning among some tall reeds near the shore about three leagues from where the ships of Aldana lay at anchor. As he was much afraid of being pursued, he revealed his situation to an Indian who happened to be near; and whom he prevailed upon to construct a float of reeds and straw, on which the Indian carried him on board one of the ships.

In the morning, Martin de Robles went to the tent of Maldonado; and finding him withdrawn as he expected, he immediately waited on Gonzalo, whom he informed of the circumstance, adding, "As the army was diminishing daily by the number and quality of the fugitives, he begged leave to advise that they should quit the present camp, and march into the interior provinces, as formerly agreed upon, without granting permission to any one to go into the city of Lima, lest many more might use that pretence for an opportunity to desert. Several of his own company, he said, had applied for leave to go into the city, to procure provisions; but he considered it better for himself to go therewith a detachment of soldiers to collect the provisions and necessaries required, that he might keep all his men in sight, and that he proposed on this occasion to take Maldonado from the Dominican convent, where he understood he had taken refuge, and to bring him a prisoner to the camp, where he ought to undergo condign punishment, as a warning to others." Gonzalo approved all that was said on this occasion by De Robles, in whom he had great confidence as a person who had taken part with him in all the past troubles, and desired him to act in the way he proposed. De Robles accordingly, taking all his own horses and attendants and those belonging to Maldonado, took along with him to Lima all the soldiers of his company in whom he could confide. After collecting such provisions and other necessaries as might serve his purpose, he set off for Truxillo with thirty armed horsemen, declaring publickly that Gonzalo was a tyrant and usurper, that all good subjects were bound to obey the orders of his majesty, and that he was resolved to join the president.

When this serious defection became known in the camp, it was universally believed that the army would soon disperse, and that Gonzalo would be massacred. Gonzalo endeavoured to restore order and confidence among his troops, pretending to care little for those who had deserted him; yet resolved to decamp next morning. That very night, Lope Martin, an inhabitant of Cuzco, deserted almost in sight of the whole army. Next morning Gonzalo quitted his present camp, and marched about two leagues to a new camp near an aqueduct, taking every precaution to prevent his people from deserting; believing that his principal danger on that account would be got over if he were once ten or twelve leagues from Lima. The licentiate Carvajal was appointed to take charge of the night guard, with strict injunctions to prevent desertion: But even he, in the middle of the night, quitted the camp accompanied by Paulo Hondegardo, Marco de Retamoso, Pedro Suarez d'Escovedo, Francisco de Miranda, Hernando de Vargas, and several others belonging to his company. These men went in the first place to Lima, whence they took the road towards Truxillo. A few hours afterwards, Gabriel de Roias left the camp, accompanied by his nephews Gabriel Bermudez and Gomez de Roias and several other persons of quality. These men left the camp unseen by any one, as they went through the quarter which had been confided to the charge of the licentiate Carvajal.