La Vallière, Duchesse de, a fascinating woman, born at Tours, who became the mistress of Louis XIV.; supplanted by another, she became a Carmelite nun in 1674 in the Carmelite nunnery in Paris, and continued doing penance there as would seem till her death (1644‒1710).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Lavalette, Count de * Lavater, Johann Kaspar