Such was the condition of Castile when the death of the miserable Henry IV, December 12, 1474, cast the responsibility of royalty on his sister Isabella and her husband, Ferdinand of Aragon. The power of the crown was eclipsed; the land was ravaged with interminable war between nobles who were practically independent; the sentiment of loyalty and patriotism seemed extinct: deceit and treachery, false oaths--whatever would serve cupidity and ambition--were universal; justice was bought and sold; private vengeance was exercised without restraint; there was no security for life and property. The fabric of society seemed about to fall in ruins.[51] To evolve order out of this chaos of passion and lawlessness was a task to test to the uttermost the nerve and capacity of the most resolute and sagacious. To add to the confusion there was a disputed succession, although, in 1468, the oath of fidelity had been taken to Isabella, with the assent of Henry IV, in the Contract of Perales, by which he, for the second time, acknowledged his reputed daughter Juana not to be his. He was popularly believed to be impotent, and when his wife Juana, sister of Affonso V of Portugal, bore him a daughter, whom he acknowledged and declared to be his heir, her paternity was maliciously ascribed to Beltran de la Cueva, and she was known by the opposite party as La Beltraneja. Though Henry had been forced by his nobles to set aside her claims in favor of his brother Alfonso in the Declaration of Cabezon, in 1464, and, after Alfonso's death, in favor of Isabella, in 1468, the latter's marriage, in 1469, with Ferdinand of Aragon so angered him that he betrothed Juana to Charles Duke of Guienne, brother of Louis XI of France, and made the nobles of his faction swear to acknowledge her. At his death he testified again to her legitimacy and declared her to be his successor in a will which long remained hidden and finally in 1504 fell under the control of Ferdinand, who ordered it burnt.[52] There was a powerful party pledged to support her rights, and they were aided on the one hand by Affonso of Portugal and on the other by Louis of France, each eager to profit by dismembering the unhappy land. Some years of war, more cruel and bloody than even the preceding aimless strife, were required to dispose of this formidable opposition--years which tried to the utmost the ability of the young sovereigns and proved to their subjects that at length they had rulers endowed with kingly qualities. The decisive victory of Toro, won by Ferdinand over the Portuguese, March 1, 1476, virtually settled the result, although the final treaty was not signed until 1479. The Beltraneja was given the alternative of marrying within six months Prince Juan, son of Ferdinand and Isabella, then but two years old, or of entering the Order of Santa Clara in a Portuguese house. She chose the latter, but she never ceased to sign herself _Yo la Reina_, and her pretensions were a frequent source of anxiety. She led a varied life, sometimes treated as queen, with a court around her, and sometimes as a nun in her convent, dying at last in 1531, at the age of seventy.[53]