The _ricosomes_ who thus were released from all the restraint of law had as little respect for those of honor and morality. The virtues which we are wont to ascribe to chivalry were represented by such follies as the celebrated _Passo Honroso_ of Suero de Quiñones, when that knight and his nine comrades, in 1434, kept, in honor of their ladies, for thirty days against all comers, the pass of the Bridge of Orbigo, at the season of the feast of Santiago and sixty-nine challengers presented themselves in the lists.[13] With exceptions such as this, and a rare manifestation of magnanimity, as when the Duke of Medina Sidonia raised an army and hastened to the relief of his enemy, Rodrigo Ponce de Leon besieged in Alhama,[14] the record of the time is one of the foulest treachery, from which truth and honor are absent and human nature displays itself in its basest aspect. According to contemporary belief, Ferdinand was indebted for the crown of Aragon to the poisoning of his brother, the deeply mourned Carlos, Prince of Viana, while the crown of Castile fell to Isabella through the similar taking off of her brother Alfonso.[15] A characteristic incident is one involving Doña Maria de Monroy, who married into the great house of Henríquez of Seville, and was left a widow with two boys. When the youths were respectively eighteen and nineteen years old they were close friends of two gentlemen of Seville named Mançano. The younger brother, dicing with them in their house, was involved in a quarrel with them, when they set upon him with their servants and slew him. Then, fearing the vengeance of the elder brother, they sent him a friendly message to come and play with them; when he came they led him along a dark corridor in which they suddenly turned upon him and stabbed him to death. When the disfigured corpses of her boys were brought to Doña María she shed no tears, but the fierceness of her eyes frightened all who looked upon her. The Mançanos promptly took horse and fled to Portugal, whither Doña María followed them in male attire with a band of twenty cavaliers. Her spies were speedily on the track of the fugitives; within a month of the murders she came at night to the house where they lay concealed; the doors were broken in and she entered with ten of her men while the rest kept guard outside. The Mançanos put themselves in defence and shouted for help, but before the neighbors could assemble she had both their heads in her left hand and was galloping off with her troop, never stopping till she reached Salamanca, where she went to the church and laid the bloody heads on the tomb of her boys. Thenceforth she was known as Doña María la Brava, and her exploit led to long and murderous feuds between the Monroyes and the Mançanos.[16]