Accordingly, the deed of exchange was signed at Blois in 1559. Diane, whose sons-in-law were the Duc d’Aumale and the Duc de Bouillon (then a sovereign prince), kept her wealth, and died in 1566 aged sixty-six. She was therefore nineteen years older than Henri II. These dates, taken from her epitaph which was copied from her tomb by the historian who concerned himself so much about her at the close of the last century, clear up quite a number of historical difficulties. Some historians have declared she was forty, others that she was sixteen at the time of her father’s condemnation in 1523; in point of fact she was then twenty-four. After reading everything for and against her conduct towards Francois I. we are unable to affirm or to deny anything. This is one of the passages of history that will ever remain obscure. We may see by what happens in our own day how history is falsified at the very moment when events happen.
Catherine, who had founded great hopes on the age of her rival, tried more than once to overthrow her. It was a dumb, underhand, terrible struggle. The day came when Catherine believed herself for a moment on the verge of success. In 1554, Diane, who was ill, begged the king to go to Saint-Germain and leave her for a short time until she recovered. This stately coquette did not choose to be seen in the midst of medical appliances and without the splendors of apparel. Catherine arranged, as a welcome to her husband, a magnificent ballet, in which six beautiful young girls were to recite a poem in his honor. She chose for this function Miss Fleming, a relation of her uncle the Duke of Albany, the handsomest young woman, some say, that was ever seen, white and very fair; also one of her own relations, Clarice Strozzi, a magnificent Italian with superb black hair, and hands that were of rare beauty; Miss Lewiston, maid of honor to Mary Stuart; Mary Stuart herself; Madame Elizabeth of France (who was afterwards that unfortunate Queen of Spain); and Madame Claude. Elizabeth and Claude were eight and nine years old, Mary Stuart twelve; evidently the queen intended to bring forward Miss Fleming and Clarice Strozzi and present them without rivals to the king. The king fell in love with Miss Fleming, by whom he had a natural son, Henri de Valois, Comte d’Angouleme, grand-prior of France. But the power and influence of Diane were not shaken. Like Madame de Pompadour with Louis XV., the Duchesse de Valentinois forgave all. But what sort of love did this attempt show in Catherine? Was it love to her husband or love of power? Women may decide.