"Some movements having occurred in Flanders, the King gave orders to proceed there, and the court, including Francesco Maria, made preparations to attend him. But the latter, wishing to see France, asked permission to take that route by land, and so to rejoin his Majesty, who was to go by sea. The King, desiring his attendance on his person, refused his request, and so the opportunity was lost, to his great mortification, and perhaps to the no small loss of his Majesty. Subsequently occurred the imprisonment of Don Carlos, which was thus effected by order of his own father. An hour after midnight, the King, in his dressing-gown, holding a candle in his hand, having gone down to the Prince's room with his council of state and but one gentleman of his chamber, found him in bed. The Prince on seeing them tried to reach the corner, where were his sword and a pair of arquebuses, which he kept there always ready; but this was prevented by the Duke of Feria, who had already secured these arms. Then, rushing to his father, he exclaimed, 'So you are come to kill me?' To this his Majesty replied, 'Not so, but because you must live as becomes you, so be calm;' and never addressed him again. The Prince then said, 'I see that I am taken for a madman, which I am not, though a desperate one.' The King, having seen the doors and windows nailed up, leaving only a shutter open for light, and having desired the arms and all such things to be taken away, returned to his apartment, leaving with Don Carlos his major-domo Ruggo Mez de Silva (?) with several chamberlains and other officers of his household, a guard of Germans being stationed outside of his door; and the court was greatly vexed thereat."
These details are curious, in illustration of the mysterious fate of Don Carlos, eldest son of Philip II. It seems agreed that he was of a most unhappy temperament, perverse, wilful, and violent, possibly insane. The immediate cause of the unnatural scene here described has never been satisfactorily explained. It is generally stated that he was discovered in treasonable correspondence with the Dutch; though others have attributed the behaviour of his father to jealousy of an old attachment between his wife Elizabeth of Valois, and the Prince, to whom she was said to have been previously promised. The Prince's arrest occurred in January 1568: it was followed by no trial or public investigation, but in the following July he ceased to live. His death was understood to have taken place under some judicial sanction, but whether by poison or the sword was never known. The entombment of his head separate from his body renders the second supposition more probable.
We may here mention that, before embarking for Spain, the Prince had, from his Cardinal uncle, the dukedom of Sora, yielding an income of about 4000 scudi, which, however, proved quite inadequate to his expenditure. Zane, the Venetian ambassador, asserts that the large arrears of pay due to his father, which he was commissioned to recover from the Spanish government, were more than absorbed by his extravagance, and that this was the reason of his recall. His own narrative, however, is entirely silent upon this subject.
"Francesco Maria, having been at length recalled by his father, who was anxious for the marriage of his only son and heir, took leave of the King and Queen, and the royal family, and proceeded by Saragossa to Barcelona, where he embarked in a galley with the Marquis of Pescara, then going as viceroy to Sicily. After a prosperous voyage of eight days, he reached Genoa, where he lived with Giovanni Andrea Doria, with whom he had become intimate at the court of Spain. Thence he went to Milan for some days, and was welcomed with distinction; and then visited Madame of Austria at Piacenza; and at Parma stayed with the Duke and his son, towards both of whom he maintained the best intelligence and cousinship. He next passed through Bologna to Ravenna, where his uncle, the Cardinal of Urbino, was archbishop, and accompanied him to Pesaro. He arrived on the 11th of July, 1568, and was received with the greatest joy by all classes.
"After a few months, seeing that his father made no movement in the affair of his marriage, he returned to his studies, interrupted during his absence from Italy. He read mathematics with Federigo Comandino, and afterwards philosophy with Cesare Benedetti (subsequently Bishop of Pesaro), Felice Pacciotti, Giacomo Mazzoni, and Cristofero Guarimone. At the same time he kept up active exercise in arms, riding, hunting, ball, and racket." About this time Mocenigo, the Venetian ambassador, praises his fine dispositions and pleasing manners, as well as his progress in various pursuits, especially mathematics and fortification; but says that his eager exposure to fatigue gave rise to apprehensions for his health, which were sadly realised. He adds that, since his return from Spain, something of the hauteur which characterised that nation was noticed in his manner.
Franz Hanfstaengl
ISABELLA D’ESTE
After the picture by Titian in the Imperial Museum, Vienna