The Memoirs of Marguerite de Valois, vol 2 | Page 4

He had given himself up to every kind of debauchery; and his death seemed the judgment of the Almighty on one whose body had long been perishing, and whose soul had been made over to the prince of demons as the price of assistance through the means of diabolical magic, which he constantly practised. The King, though now without this instrument of his malicious contrivances, turned his thoughts entirely upon the destruction of the Huguenots. To effect this, he strove to engage my brother against them, and thereby make them his enemies and that I might be considered as another enemy, he used every means to prevent me from going to the King my husband. Accordingly he showed every mark of attention to both of us, and manifested an inclination to gratify all our wishes.
After some time, M. de Duras arrived at Court, sent by the King my husband to hasten my departure. Hereupon, I pressed the King greatly to think well of it, and give me his leave. He, to colour his refusal, told me he could not part with me at present, as I was the chief ornament of his Court; that he must, keep me a little longer, after which he would accompany me himself on my way as far as Poitiers. With this answer and assurance, he sent M. de Duras back. These excuses were purposely framed in order to gain time until everything was prepared for declaring war against the Huguenots, and, in consequence, against the King my husband, as he fully designed to do.
As a pretence to break with the Huguenots, a report was spread abroad that the Catholics were dissatisfied with the Peace of Sens, and thought the terms of it too advantageous for the Huguenots. This rumour succeeded, and produced all that discontent amongst the Catholics intended by it. A league was formed: in the provinces and great cities, which was joined by numbers of the Catholics. M. de Guise was named as the head of all. This was well known to the King, who pretended to be ignorant of what was going forward, though nothing else was talked of at Court.
The States were convened to meet at Blois. Previous to the opening of this assembly, the King called my brother to his closet, where were present the Queen my mother and some of the King's counsellors. He represented the great consequence the Catholic league was to his State and authority, even though they should appoint De Guise as the head of it; that such a measure was of the highest importance to them both, meaning my brother and himself; that the Catholics had very just reason to be dissatisfied with the peace, and that it behoved him, addressing himself to my brother, rather to join the Catholics than the Huguenots, and this from conscience as well as interest. He concluded his address to my brother with conjuring him, as a son of France and a good Catholic, to assist him with his aid and counsel in this critical juncture, when his crown and the Catholic religion were both at stake. He further said that, in order to get the start of so formidable a league, he ought to form one himself, and become the head of it, as well to show his zeal for religion as to prevent the Catholics from uniting under any other leader. He then proposed to declare himself the head of a league, which should be joined by my brother, the princes, nobles, governors, and others holding offices under the Government. Thus was my brother reduced to the necessity of making his Majesty a tender of his services for the support and maintenance of the Catholic religion.
The King, having now obtained assurances of my brother's assistance in the event of a war, which was his sole view in the league which he had formed with so much art, assembled together the princes and chief noblemen of his Court, and, calling for the roll of the league, signed it first himself, next calling upon my brother to sign it, and, lastly, upon all present.
The next day the States opened their meeting, when the King, calling upon the Bishops of Lyons, Ambrune, Vienne, and other prelates there present, for their advice, was told that, after the oath taken at his coronation, no oath made to heretics could bind him, and therefore he was absolved from his engagements with the Huguenots.
This declaration being made at the opening of the assembly, and war declared against the Huguenots, the King abruptly dismissed from Court the Huguenot, Genisac, who had arrived a few days before, charged by the King my husband with a commission to hasten my departure. The King very sharply told him that his sister had been given to a Catholic,