at the expense of Genoa, and, when he expostulated with the King, Francis formed the dangerous design of arresting the captain in his own city, and put a French commander, without experience, Barbesieux, over his head. Charles saw his opportunity and, by the advice of the Prince of Orange, he won Doria for his own service, on favourable terms of engagement, and with the promise of liberty for Genoa under imperial protection. In vain, when Francis learnt his danger, he conceded too late everything that Doria had asked. The Admiral's suspicion and resentment had been aroused, and he joined the Emperor once and for all.
This defection changed the whole position of affairs. While the French camp before Naples was ravaged by the plague, abundance succeeded to famine in the city. The French fleet under Barbesieux arrived on July 17 bringing a few men, but little real assistance. Lautrec clung desperately to his siege, and endeavoured to collect fresh troops. The besieged became more and more audacious in their attacks; Doria appeared at Naples with his galleys; and, when on August 16 Lautrec died, the situation was hopeless. On August 28 the remnants under the Marquis of Saluzzo retired to A versa, where they were obliged to capitulate shortly after. On September 12 Doria entered Genoa, and established a new oligarchical Republic, the French taking refuge in the Castelletto. The form of government then set up persisted, with some modification in 1576, until 1796, and Genoa had internal peace at last. In the North Pavia had been retaken by Saint Pol. The French commander made an effort to recover Genoa, but without success. The Genoese soon after occupied Savona, and the Castelletto surrendered (October 28). Finally in the spring of 1529 the combined armies of Saint Pol and the Duke of Urbino determined to reduce Milan, not by a siege, but by a combination of posts of observation. This plan, unpromising enough in itself, was frustrated by the conduct of Saint Pol, who attempted to surprise Genoa, but allowed himself to be waylaid and defeated on his march by Leyva at Landriano (June 20).
Francis and his allies still held some places in the Milanese, and some outlying posts in the kingdom, as well as the cities of the Adriatic littoral. But negotiations begun in the winter between Louise of Savoy and Margaret, the ruler of the Netherlands, had resulted in a project of peace, which was vehemently desired in the interests of all countries, but especially of the Netherlands, where public opinion made itself perhaps most felt. Charles was meditating a great expedition to Italy under his personal command, but he consented to treat. He sent full powers and instructions, elastic though precise, to Margaret, who was visited by the King's mother, Louise, at Cambray, July 5. Here the terms of peace were definitely concluded, and the treaty was signed on August 3, 1529. The compact of marriage between Francis and Eleonora was renewed. Francis resigned all pretensions to Italy, left his allies in the lurch,
