Satisfied by this, D. Carlos wished to secure the success of his plan by a diplomatic stroke in his own way, which he did with so much haughty folly, that he displayed his incapacity for anything like prudence and government before the whole of Europe.
The Cortes of Castille had been convoked since the 1st of December of that year 1556, and the meetings were held in one of the rooms of the castle. On the 22nd of December Philip II, as usual, went to the Escorial for the Christmas festival, and D. Carlos availed himself of this absence to effect his stroke.
He therefore presented himself one morning, unexpectedly, at the meeting of the members, and, without any warning, preamble or announcement, said in a very angry, haughty way, "You must know that my father is thinking of going to Flanders, and I wish at all costs to accompany him. I know that at the last Cortes you had the impertinence to ask my father to marry me to the Princess, my aunt; I do not understand why you should interfere with my marriage, or that it matters to you whether my father marries me to one or the other. I do not wish that you should allow yourselves the fresh impertinence of asking my father to leave me in Spain, and I therefore forbid you to make such a petition, on the understanding that the member who does this will have me for a mortal enemy, and I will do all I can to ruin him."
Having said this, he ordered the members not to dare to say anything of this scene to the King, and he turned his back, leaving these worthy men astounded by his folly and insolence.
Grave disorders broke out in Flanders soon after, and the King put off his journey, sending on the Duque de Alba to pacify those States. The anger of Prince Carlos on hearing this knew no bounds, as he saw his plans in danger, and felt himself passed over, thinking in his heedless pride that, better than anyone, he could pacify the Low Countries.
The Duque de Alba could not help taking leave of the Prince when he went to kiss the King's hand at Aranjuez, where the Court then was.
But no sooner did D. Carlos see him come into the room, than he shouted out in a rage, that "he was not to go to Flanders, because it was his journey; that he should not do it, and if he contradicted he should be killed."
The Duke respectfully answered that the life of H.H. was too precious to expose on such an expedition, that he was only going first to pacify the States, that H.H. should then come and find himself on firm ground. But the Prince, blind with anger, drew out his dagger and threw himself on the Duke, crying out, "You are not to go to Flanders, or I must kill you." The Duke took hold of both his arms, and they joined in a struggle, until the Prince, overcome, fell back breathless. And as the Duke continued with his reasons, in order to calm him, the Prince, all at once, set on him again, this time treacherously, meaning to plunge his dagger in Alba's breast. The Duke held him, and the struggle began again, until the courtiers, this time attracted by the noise, separated them, taking hold of the furious Prince and allowing the Duke to retire.