[Sidenote: Religious Wars in France]
Catherine feared both the ambition of the powerful Guise family and the disruptive tendencies of Protestantism. The result was a long series of confused civil wars between the ardent followers, respectively Catholic and Protestant, of the Guise and Bourbon families, in which the queen-mother gave support first to one side and then to the other. There were no fewer than eight of these sanguinary conflicts, each one ending with the grant of slight concessions to the Huguenots and the maintenance of the weak kings upon the throne. The massacre of Saint Bartholomew's Day (1572) was a horrible incident of Catherine's policy of "trimming." Fearing the undue influence over the king of Admiral de Coligny, an upright and able Huguenot leader, the queen-mother, with the aid of the Guises, prevailed upon the weak-minded Charles IX to authorize the wholesale assassination of Protestants. The signal was given by the ringing of a Parisian church-bell at two o'clock in the morning of 24 August, 1572, and the slaughter went on throughout the day in the capital and for several weeks in the provinces. Coligny was murdered; even women and children were not spared. It is estimated that in all at least three thousand—perhaps ten thousand—lost their lives.
[Sidenote: The "Politiques">[
The massacre of Saint Bartholomew's Day did not destroy French Protestantism or render the Huguenot leaders more timid in asserting their claims. On the other hand, it brought into clear light a noteworthy division within the ranks of their Catholic opponents in France—on one side, the rigorous followers of the Guise family, who complained only that the massacre had not been sufficiently comprehensive, and, on the other side, a group of moderate Catholics, usually styled the "Politiques" who, while continuing to adhere to the Roman Church, and, when called upon, bearing arms on the side of the king, were strongly opposed to the employment of force or violence or persecution in matters of religion. The Politiques were particularly patriotic, and they blamed the religious wars and the intolerant policy of the Guises for the seeming weakness of the French monarchy. They thought the massacre of Saint Bartholomew's Day a blunder as well as a crime.
The emergence of the Politiques did not immediately make for peace; rather, it substituted a three-sided for a two-sided conflict.
[Sidenote: Philip II and the War of the Three Henries]
After many years, filled with disorder, it became apparent that the children of Catherine de' Medici would have no direct male heirs and that the crown would therefore legally devolve upon the son of Anthony of Bourbon—Henry of Bourbon, king of Navarre and a Protestant. Such an outcome was naturally distasteful to the Guises and abhorrent to Philip II of Spain. In 1585 a definite league was formed between Henry, duke of Guise, and the Spanish king, whereby the latter undertook by military force to aid the former's family in seizing the throne: French politics in that event would be controlled by Spain, and Philip would secure valuable assistance in crushing the Netherlands and conquering England.[Footnote: At that very time, Mary, Queen of Scots, cousin of Henry, duke of Guise, was held a prisoner in England by Queen Elizabeth. See above, p. 99.] The immediate outcome of the agreement was the war of the three Henries—Henry III, son of Catherine de' Medici and king of France; Henry of Bourbon, king of Navarre and heir to the French throne; and Henry, duke of Guise, with the foreign support of Philip II of Spain. Henry of Guise represented the extreme Catholic party; Henry of Navarre, the Protestant faction; and Henry of France, the Catholic moderates—the Politiques—who wanted peace and were willing to grant a measure of toleration. The last two were upholders of French independence against the encroachments of Spain.
The king was speedily gotten into the power of the Guises, but little headway was made by the extreme Catholics against Henry of Navarre, who now received domestic aid from the Politiques and foreign assistance from Queen Elizabeth of England and who benefited by the continued misfortunes of Philip II. At no time was the Spanish king able to devote his whole attention and energy to the French war. At length in 1588 Henry III caused Henry of Guise to be assassinated. The king never had a real chance to prove whether he could become a national leader in expelling the foreigners and putting an end to civil war, for he himself was assassinated in 1589. With his dying breath he designated the king of Navarre as his successor.
[Sidenote: Henry of Navarre]
Henry of Navarre, the first of the Bourbon family upon the throne of France, took the title of Henry IV (1589-1610). [Footnote: It is a curious fact that Henry of Navarre, like Henry of Guise and Henry of France, died by the hand of an assassin.] For four years after his accession, Henry IV was obliged to continue the civil war, but his abjuration of Protestantism and his acceptance of Catholicism in 1593 removed the chief source of opposition to him within France, and the rebellion speedily collapsed. With the Spanish king, however, the struggle dragged on until the treaty of Vervins, which in the last year of Philip's life practically confirmed the peace of Cateau-Cambrésis.