In 1559 Henry II. was killed by an accident at a tournament. The marriage of the two children had taken place. The sickly boy, with only a modest portion of intelligence, was Francis II., King of France. Marie, his beautiful and adored queen, controlled him utterly, and was herself in turn controlled by her uncles of the house of Guise. In fact, the family of Guise, which was the head of the Catholic party in the kingdom, ruled France, with the strange result that if Catharine looked for any allies in her fight with this ambitious family, she must make common cause with the Protestants, led by Admiral Coligny, whom she hated only a little less than the uncles of Marie Stuart. The princes of the house of Bourbon, a remote branch of the royal family, which, next to Francis, were the nearest to the throne, had been extremely jealous of the growing power of the Guises. Now they saw them, as the advisers of the young king, actually usurping the position which was theirs by right of birth. Two factions grew out of this feud in the court, and there developed a Bourbon party, and the party of the Guises; one identified with the Protestant and the other with the Catholic cause. Antony de Bourbon, the head of the family of this name, whether from conviction or from antagonism to the Guises, had openly espoused the Protestant side. It was the rich burghers of the towns, in combination with the smaller nobles, which composed the Protestant party in France. And although the impelling cause of the great movement was religious, political wrongs had become a powerful contributing cause; as is always the case, the discontented and aggrieved, for whatever reason, casting in their lot with those who had a deeper grievance and a more sacred purpose. Whether the conversion of the Bourbon prince was of that nature or not, who can say? But the movement swelled, and France was divided into two hostile camps: one under the Protestant banner of Antony de Bourbon, father of Henry of Navarre, and the other under that of the Catholic, Francis, Duke of Guise; and two children were on the throne of France while the ground was trembling beneath their feet with a coming revolution. Francis I. had been too much occupied with his own plans to take in hand systematically and seriously the prevailing heresy. Henry II., son of Francis, had also temporized with the religious revolt, probably not realizing the powerful element it contained. Now, with the Guises firmly in power, there would be no more half-way measures. But a crisis was at hand which would change the whole situation. The discovery of a plot to seize the person of the young king and place a Bourbon prince upon the throne, led to a general slaughter. Fresh relays of executioners in Paris stood ready to relieve each other when exhausted, and the Seine was black with the bodies of the drowned.