sacrosanct King had been wounded by what they regarded as impious blasphemy. Both factions flew to arms, and for months civil war raged, the walled cities being alternately besieged and captured by both parties. Isabel herself remained with the King, usually at Segovia or Madrid; though with our knowledge of her character and tastes, she can have had little sympathy with the tone of her brother’s court. At one time during the lingering struggle in 1466, Henry endeavoured to win Villena and his family from the side of rebellion by betrothing Isabel to Don Pedro Giron, Master of Calatrava, Villena’s brother. The suitor was an uncouth boor, and that an Infanta of Castile should be sacrificed in marriage with an upstart such as he was too much for Isabel’s pride and great ambition. Nothing in the world, she said, should bring her to such a humiliation; though the King, careless of her protests, petitioned the Pope to dispense Don Pedro from his pledge of celibacy as Master of a monkish military order. Isabel’s faithful friend, Doña Beatriz Bobadilla, wife of Andres Cabrera, High Steward of the King, and Commander of the fortress of Segovia, was as determined as her mistress that the marriage should not take place, and swore herself to murder Don Pedro, if necessary, to prevent it. A better way was found than by Dona Beatriz’s dagger, for when the papal dispensation arrived, and the prospective bridegroom set out in triumph to claim his bride, poison cut short his career as soon as he left his home. Whether Isabel herself was an accomplice of the act will never be known. She probably would not have hesitated to sanction it in the circumstances, according to the ethics of the time; for she never flinched, as her brother did, at inflicting suffering for what she considered necessary ends. On the 20th August 1467, the main bodies of both factions met on the historic battlefield of Olmedo, the warlike Archbishop of Toledo, clad in armour covered by a surcoat embroidered with the holy symbols, led into battle the boy pretender Alfonso; whilst the royal favourite, Beltran de la Cueva, now Duke of Alburquerque, on the King’s side, matched the valour of the Churchman.[8] Both sides suffered severely, but the pusillanimity of the King caused the fight to be regarded as a defeat for him, and the capture of his royal fortress of Segovia soon afterwards proved his impotence in arms so clearly, that a sort of _modus vivendi_ was arranged, by which for nearly a year each King issued decrees and ostensibly ruled the territories held by his partisans.[9]