Her adoration of Francis I. saved the House of Medici from all suspicion when the Dauphin died poisoned. At that time Catherine and the Duc d'Orléans were at the King's headquarters in Provence, for France had already been invaded by Charles V., the King's brother-in-law. The whole Court had remained on the scene of the wedding festivities, now the theatre of the most barbarous war. Just as Charles V., compelled to retreat, had fled, leaving the bones of his army in Provence, the Dauphin was returning to Lyons by the Rhône. Stopping at Tournon for the night, to amuse himself, he went through some athletic exercises, such as formed almost the sole education he or his brother received, in consequence of their long detention as hostages. The Prince being very hot--it was in the month of August--was so rash as to ask for a glass of water, which was given to him, iced, by Montecuculi. The Dauphin died almost instantaneously. The King idolized his son. The Dauphin was indeed, as historians are agreed, a very accomplished Prince. His father, in despair, gave the utmost publicity to the proceedings against Montecuculi, and placed the matter in the hands of the most learned judges of the day. After heroically enduring the first tests of torture without confessing anything, the Count made an avowal by which he fully implicated the Emperor and his two generals, Antonio de Leyva and Fernando Gonzaga. This, however, did not satisfy Francis I. Never was a case more solemnly thrashed out than this. An eye-witness gives the following account of what the King did:-- "The King called all the Princes of the Blood, and all the Knights of his Order, and many other high personages of the realm, to meet at Lyons; the Pope's Legate and Nuncio, the cardinals who were of his Court, and the ambassadors of England, Scotland, Portugal, Venice, Ferrara, and others; together with all the princes and great nobles of foreign countries, both of Italy and of Germany, who were at that time residing at his Court, to-wit: The Duke of Wittemberg, in Allemaigne; the Dukes of Somma, of Arianna, and of Atria; the Princes of Melphe [Malfi?] (who had desired to marry Catherine), and of Stilliano, Neapolitan; the Marquis di Vigevo, of the House of Trivulzio, Milanese; the Signor Giovanni Paolo di Ceri, Roman; the Signor Césare Fregose, Genoese; the Signor Annibale Gonzaga, Mantuan, and many more. Who being assembled, he caused to be read in their presence, from the beginning to the end, the trial of that wretched man who had poisoned his late Highness the Dauphin, with all the interrogations, confessions, confrontings, and other proceedings usual in criminal trials, not choosing that the sentence should be carried out until all those present had given their opinion on this monstrous and miserable matter."