Von Madame de Motteville, einer Zeitgenossin von Françoise-Louise de La Baume Le Blanc, erfahren wir Folgendes über Letztere: "It was about this time [im Jahr 1661] that the king [Ludwig XIV.] first made known his inclination for Mademoiselle de La Vallière, one of Madame's [Henriette Anna von England, Herzogin von Orléans] maids of honour. She was amiable, and her beauty had great charms from the dazzling white and rose of her complexion, the blue of her eyes which had much sweetness, and the beauty of her blond hair which increased that of her face. ... The queen-mother [Anna von Spanien/Österreich, die Mutter von Ludwig XIV.] was distressed by this new passion ... several days earlier, she had been suspected of having commanded me [Madame de Motteville] to have Mademoiselle de Pons removed from Fontainebleau to Paris by my friend Madame du Plessis, to withdraw her from the eyes of the king ... The method that the queen-mother took to moderate this new inclination of the king for Mademoiselle de La Vallière was to warn him cordially, representing to him what he owed to God and to his kingdom, and telling him that he ought to fear that many persons would use that attachment to form intrigues about him which would some day be to his injury. She begged him also to help her to hide his passion from the queen [Maria Teresa von Spanien, der ersten Gattin von Ludwig XIV.], for fear her grief might cause some evil effects to the life of the child she was then bearing. The king esteemed this advice; and the secret was kept throughout the Court with such care that the queen, who was then pregnant some four or five months with Monseigneur the dauphin, concluded the period of her pregnancy without knowing it." (in: Memoirs of Madame de Motteville, Volume 3, id., pp. 259-260).
Aus der Kindheit der Madame de La Vallière laut Madame de Montespan: "Her father [Laurent de La Baume Le Blanc (1611-1651), Seigneur of La Vallière] died when she was quite young, and, when dying foresaw that his widow [Marie-Françoise Le Provost de La Coutelaye], being without fortune or constancy, would ere long marry again. To little Louise [Madame de La Vallère] he was devotedly attached. Ardently embracing her, he addressed her thus: 'In losing me, my poor little Louise, you lose all. What little there is of my inheritance ought, undoubtedly, to belong to you; but I know your mother; she will dispose of it. If my relatives do not show the interest in you which your fatherless state should inspire, renounce this world soon, where, separated from your father, there exists for you but danger and misfortune. Two of my ancestors left their property to the nuns of Saint Bernard at Gomer-Fontaines, as they are perfectly well aware. Go to them in all confidence; they will receive you without a dowry even; it is their duty to do so. If, disregarding my last counsel, you go astray in the world, from the eternal abodes on high I will watch over you; I will appear to you, if God empower me to do so; and, at any rate, from time to time I will knock at the door of your heart to rouse you from your baleful slumber and draw your attention to the sweet paths of light that lead to God.' This speech of a dying father was graven upon the heart of a young girl both timid and sensitive. She never forgot it ... Before becoming attached to the King, she opened out her heart to me with natural candour; and whenever in the country she observed the turrets or the spire of a monastery, she sighed, and I saw her beautiful blue eyes fill with tears." (in: Memoirs of Madame la Marquise de Montespan – Being Historic Memoirs of the Court of Louis XIV., Volume 1, pp. 69-70).
Die erste Begegnung des französischen Köngis Ludwig XIV. mit der hübschen, sanftmütigen, impulsiven und selbstlosen Mademoiselle La Vallière: "... Louis [Ludwig XIV.] now chose her [seiner Schwägerin Henriette Maria von Englands] fair young maid-of-honour, the little La Vallière, as she was called, to be the object of his attentions, and paid her a homage which excited general surprise. The poor girl, gentle and modest as she was, soon fell desperately in love with this handsome and attractive monarch ... the King's intrigue with La Vallière had assumed more serious proportions. So grave was the scandal, that one day Madame [Henriette Anna von England, die Herzogin von Orléans] herself told her young maid-of-honour that she must leave her service. La Vallière, overwhelmed with confusion, acknowledged the truth of her mistress's reproaches, and left the Tuileries that night. The next morning the King was informed of his mistress's flight. There was a great hue and cry, and Louis himself set out to find her retreat. ... At length, after a prolonged search, the unhappy La Vallière was discovered in a convent near Saint-Cloud, where she had taken refuge. The King himself brought her back to the Tuileries, and with tears in his eyes implored Madame to receive her. Henrietta [Anna] consented, but not without considerable reluctance, and is said to have told the King, that in future she would consider La Vallière as his property ... [Henriette Anna] begged the King to remove his mistress from her household. ... At length Louis acknowledged his mistake, and La Vallière was given separate apartments, and appeared no longer among Madame's ladies. And when, in the spring of 1663, her condition [sie war schwanger geworden] rendered further concealment impossible, she moved to the Palais Brion, a house in the gardens of Palais-Royal, which the King gave her as a residence." (in: Julia Mary Cartwright Ady: Madame, a life of Henrietta, daughter of Charles I. and Duchess of Orleans, id., pp. 105/114/122).
Ludwig XIV. liebte seine Mutter sehr, aber er wusste auch, dass sie gegen seine Mätresse, Mademoiselle de La Vallière, war. Und trotzdem hatte er das Bedürfnis, diese Frau, die er so sehr liebte, seiner Mutter im Jahr 1665 vorzustellen: "One day, after her return [die Rückkehr seiner Mutter] to Vincennes and while she still kept her chamber, the king brought Mademoiselle de La Vallière to her. He was not afraid that the queen [seine Gattin Maria Teresa von Spanien] would see her, because she was ill herself. But when she [seine Gattin] knew that the girl was in the queen-mother's room, playing cards with the king and Monsieur and Madame [ihrem jüngeren Sohn Philippe I. und dessen Gattin], she was excessively distressed; and as I [Madame de Motteville] happened to be with her at the time she commanded me to go and speak of it to the queen-mother. I found her in her oratory apparently much grieved at what the king had done. ... the next day she [die Mutter des Königs] talked of it with the queen her daughter[-in-law], and I know that they continued satisfied with each other." (in: Memoirs of Madame de Motteville, Volume 3, id., p. 306).