When Anjou died, Navarre was heir presumptive to the throne, and had to meet the furious hostility of the Guise faction. These said that Navarre's uncle, Cardinal de Bourbon, "wine-tun rather than a man," should be their king when Valois died. They secured the help of Spain before publishing their famous Manifesto. This document avowed the intentions of those forming the Catholic League to restore the dignity of the Church by drawing the sword, if necessary, and to settle for themselves the question of Henry III's successor. He bribed the people by releasing them from taxation and promised regular meetings of the States-General.
The King hesitated to grant the League's demands, which were definitely formulated in 1585. He did not wish to revoke the Edicts of Toleration that had recently been passed, and might have refused, if his mother had not advised him to make every concession that was possible to avoid the enmity of the Guise faction. He consented, and was lost, for the Huguenots sprang to arms, and he found that he was to be driven from his capital by the Guises.
The King was accused of sympathy with the Protestant cause, which made his name odious to the Catholic University of Paris. He had personal enemies too, such as the Duchess of Montpensier, sister to Henry of Guise, who was fond of saying that she would give him another crown by using the gold scissors at her waist. There was some talk of his entering a monastery where he would have had to adopt the tonsure.
One-half of Navarre's beard had turned white when he heard that Henry III was revoking the Edicts of Toleration. Yet he was happiest in camp, and leapt to the saddle with a light heart in May 1588 when the King fled from Paris and Guise entered the capital as the deliverer of the people. He looked the model of a Gascon knight, with hooked nose and bold, black eyes under ironical arched eyebrows. He was a clever judge of character, and knew how to win adherents to his cause. His homely garb attracted many who were tired of the weak Valois kings, for there was no artificial grace in the scarlet cloak, brown velvet doublet and white-plumed hat which distinguished him from his fellows.
Henry III plotted desperately to regain his prestige, and showed some of the Medici guile in a plot for Guise's assassination. When this succeeded he went to boast to Catherine that he had killed the King of Paris. "You have cut boldly into the stuff, my son," she answered him, "but will you know how to sew it together?"
Paris was filled by lamentations for the death of Guise, and the festivities of Christmas Eve gave way to funeral dirges. The University of Sorbonne declared that they would not receive Henry of Valois again as king. His only hope was to reconcile himself with Navarre and the Protestant party. Paris was tumultuous with resistance when the news came that Royalists and Huguenots had raised their standards in the same camp and massed two armies. The Catholic League was beloved by the poorer citizens because it released them from rent-dues. The spirit of the people was shown by processions of children, who threw lighted torches to the ground before the churches, stamped on them, and cried, "Thus may God quench the House of Valois!"
The capital welcomed Spanish troops to aid them in keeping Henry III from the gates. He was assassinated by a Burgundian monk as he approached the city "he had loved more than his wife," and Henry of Navarre, though a heretic, now claimed the right of entrance.
Navarre was the lineal descendant of Saint Louis of France, but for ten generations no ancestor of his in the male line had ruled the French kingdom. He was the grandson of Margaret, sister of Francis I, and Henry d'Albret, who had borne captivity with that monarch. Many were pledged to him by vows made to the dying King, who had come to look on him as a doughty champion; many swore that they would die a thousand deaths rather than be the servants of a heretic master.
In February 1590, Henry laid siege to Dreux in order to place himself between his enemies and Paris. Mayenne, the leader of the opposite camp, drew him to Ivry, where a battle was fought on March 14th, resulting in the complete discomfiture of the Catholic Leaguers. The white plume of Navarre floated victorious on the field, and the black lilies of Mayenne were trampled. The road to Paris lay open to the heretic King, who invested the city on the northern side, but did not attack the inhabitants. The blockade would have reduced the hungry citizens to submission at the end of a month if the Duke of Parma had not come to their relief at the command of the Spanish sovereign.
Philip II wished his daughter to marry the young Duke of Guise and to ascend the French throne with her husband. For that reason he supported Paris in its refusal to accept the Protestant King of Navarre. It was not till March 1594, that the King, known as Henri Quatre, was able to lead his troops into Paris.