That no more general rising took place in Italy during the months when Charles was suffering the invasion of Lorraine, and afterwards flying from Innsbruck before his enemies, is a remarkable testimony to the solidity of the edifice which he had built up. Charles contributed indeed to this result by abandoning the forward policy and its agents. Mendoza was recalled, and Gonzaga was removed from the government of Milan. There were not wanting centres of disaffection. Ferrara was French, even Cosimo wavered, Siena, irritated by the castle which Charles was building outside the walls by the advice of Mendoza, burst into open rebellion (July 17, 1552); but Cosimo was able to isolate the conflagration, and although the Spanish garrison was driven out and the fortress levelled the rebellion did not spread. It was agreed that Siena should remain free under imperial protection, and foreign forces should be excluded. Nevertheless French troops garrisoned the city, the fortifications were strengthened, and the Cardinal of Ferrara assumed the government in the French interest. The Spanish government had to acquiesce for the present and wait for its time to come. An attempt in January, 1553, to subdue the city by force from Naples failed owing to the death of Toledo, and the recall of his son, who was commanding the army.'
In 1554, however, Cosimo gave the word for more energetic action. Piero Strozzi, the ubiquitous opponent of Medici and Habsburg, had entered the city in January. During his temporary absence Florentine troops surprised a gate of the city. Nevertheless Siena held out for fifteen months, the besieging army being commanded by that successful adventurer, Gian Giacomo Medichino, Marquis of Marignane; while Biaise de Montluc governed the city for the French King and Strozzi showed great ability and resource in frequent raids and sallies. But Strozzi's total defeat at Marciano on August 2, 1554, rendered it possible to complete the blockade, and in April, 1555, the city surrendered to famine. The irreconcilables held out for four years longer at Montalcino, but the issue was no longer doubtful. The city was given up by Philip to Cosimo (1557), and incorporated in his duchy of Tuscany. The Spaniards retained, however, the coast towns (the Presidï). Piombino and Elba Cosimo had already received. So ended the last of the old-fashioned revolutions of Italy, and one more single and independent city was incorporated in the larger system. Cosimo was a main link in the Italian scheme of Charles, and the accessions of territory which he received were well earned by his services to the Habsburg cause.
Meanwhile the French and Turkish fleets had been co-operating in the Mediterranean, raiding the Italian coasts. They then provoked a rebellion in Corsica, which at first had considerable success, but ultimately with Spanish and German aid the Genoese recovered the principal fortresses, and the Treaty of Cateau-Cambrésis restored the island to Genoa.
The war on the French frontier continued its indecisive course. In
