At this crisis, a circumstance occurred, which gave a new face to affairs, and totally disconcerted the operations of the confederates. This was the loss of their young leader, Alfonso; who was found dead in his bed, on the 5th of July, 1468, at the village of Cardeñosa, about two leagues from Avila, which had so recently been the theatre of his glory. His sudden death was imputed, in the usual suspicious temper of that corrupt age, to poison, supposed to have been conveyed to him in a trout, on which he dined the day preceding. Others attributed it to the plague, which had followed in the train of evils, that desolated this unhappy country. Thus at the age of fifteen, and after a brief reign, if reign it may be called, of three years, perished this young prince, who, under happier auspices and in maturer life, might have ruled over his country with a wisdom equal to that of any of its monarchs. Even in the disadvantageous position, in which he had been placed, he gave clear indications of future excellence. A short time before his death, he was heard to remark, on witnessing the oppressive acts of some of the nobles, "I must endure this patiently, until I am a little older." On another occasion, being solicited by the citizens of Toledo to approve of some act of extortion which they had committed, he replied, "God forbid I should countenance such injustice!" And on being told that the city in that case would probably transfer its allegiance to Henry, he added, "Much as I love power, I am not willing to purchase it at such a price." Noble sentiments, but not at all palatable to the grandees of his party, who saw with alarm that the young lion, when he had reached his strength, would be likely to burst the bonds with which they had enthralled him. [35]
It is not easy to consider the reign of Alfonso in any other light, than that of a usurpation; although some Spanish writers, and among the rest Marina, a competent critic when not blinded by prejudice, regard him as a rightful sovereign, and as such to be enrolled among the monarchs of Castile. [36] Marina, indeed, admits the ceremony at Avila to have been originally the work of a faction, and in itself informal and unconstitutional; but he considers it to have received a legitimate sanction from its subsequent recognition by the people. But I do not find, that the deposition of Henry the Fourth was ever confirmed by an act of cortes. He still continued to reign with the consent of a large portion, probably the majority, of his subjects; and it is evident that proceedings, so irregular as those at Avila, could have no pretence to constitutional validity, without a very general expression of approbation on the part of the nation.