The letters written by Cosimo de’ Medici to his cousin Averardo de’ Medici, in October and November of 1430 and February of 1431, relate to the costly and disastrous war waged against Lucca, and require a few explanatory sentences.
The war was proposed to the Commune of Florence by the impetuous young leader of the aristocratic party in the city, and Cosimo, who after the death of his father Giovanni was the recognised head of the democracy, supported the proposals of his opponent and rival, Rinaldo degl’ Albizzi. The war was popular. The Florentines believed that they had secured the acquiescence of the Duke of Milan and of the Pope. All things seemed to favour them (letter of February). The plan of the Florentine generals in the field was to starve Lucca into surrender by seizing on the districts of Camaiore and Pietrasanta, whence the Lucchesi drew their supplies. The “Ten of the Balìa” or Florentine war committee countermanded this prudent plan of campaign and their troops could effect nothing against Lucca. The Lucchesi were hard pressed, however, and appealed to the Duke of Milan. He permitted Francesco Sforza to take service under Lucca, and that great general soon reduced the Florentines to extremities. In their need they resolved to bribe Sforza, and on receiving 50,000 florins he abandoned the Lucchesi. The “tyrant” of Lucca, Paolo Guinigi, was overthrown; the city became a Republic, and sued for peace. But Florence resolved to prosecute the war, and engaged Count Guido Antonio di Montefeltro, Lord of Urbino, as their general. Thereupon the Lucchesi again appealed to the Duke of Milan, who permitted Niccolò Piccinino and his troops to take service under Lucca. The continual interference of the “Ten” with their generals in the field resulted in one defeat after another. In these circumstances Cosimo wrote his October letter. He recognises that the conduct of the war by Florence had been disastrous; sees, when too late (for the Milanese troops prevented it), that Lucca ought to have been starved into surrender; and declares that the only way out of their difficulties is for Florence to induce Venice to attack Milan from the north. As the “Ten” from their gross mismanagement of the war had occurred great opprobrium in the city, and as there was little prospect of matters improving without aid from Venice, the astute Cosimo advises that none of his prominent friends shall stand as candidate for election to the Balìa. The letter of December relates to a proposed embassy to Venice to urge the great Republic to attack Milan.
The war went on for three years longer, and though we have no more comments of Cosimo on the matter its course may be indicated. Venice did at length yield to the prayers of the Tuscan Republic, and this brought her rival Genoa into the fray. At last all parties were weary of the strife and desired peace. The Marquesses Ettore of Este and Lodovico of Saluzzo were named arbiters. The Cardinal di Santa Croce again worked for harmony. A general peace was concluded on April 26, 1433, and its publication in Florence on May 10th was celebrated with all manner of popular rejoicings.
In the midst of these wars and intrigues it is pleasant to see the good Contessina careful only that her boys should be brought up in the old Florentine fashion and that her husband should be properly clad.
Cosimo evidently continued to “be chary with ink and paper,” at all events to his wife; as when he was again absent at Ferrara with their two sons, Contessina corresponded with Giovanni, the youngest, who was barely fourteen.
Contessina de’ Medici to her son Giovanni at Ferrara
I wrote to thee a few days ago, so have but little to say. By a letter from Ser Alexo I gather you are all well, God be thanked. We are the same, thanks be to God. I hear that thou desirest to come home and dost not like the place. Thou shouldest be glad to be there, if only to be in the bank and to learn something. Besides it is not healthy here. Therefore, my son, I beg thee not to think of returning until the plague has ceased, and say the same to Piero. Let me know what clothes he has had made as I do not know what he wore when he left, and he has not asked me to send his coat lined with cloth. It has been very hot here for several days, and I suppose will have been the same there; so be careful and keep cool. I do not know why Cosimo has not told me to send his summer clothes, but I think he intends to return any day. Do thy best to please him in all things, and see that he wants for nothing; though they tell me he is quite fat, which is all that is needful. Commend me to madonna Dina and salute monna Ginevra and thank them from me; Ser Alano tells me they treat you both as though you were their brothers. I should also like much to know whether thou art working in the bank, thou or Piero, and whether Cosimo makes use of Piero. Mind and write this to me. I add no more. Christ guard thee.—At Castelluccio, 6th June 1430.
Thy Contessina.[14]
In the autumn of the same year Cosimo again left Florence, partly on account of the plague, but probably also on account of the bitter party strife in the city. He writes to his cousin from Verona and then from Ostiglia, where he heard the news of the defeat of the Florentine troops near Lucca.
Cosimo de’ Medici to Averardo de’ Medici at Pisa