The Columbia Encyclopedia, Sixth Edition. 2001-07.
La Vallière, Louise Françoise de La Baume Le Blanc de
(lwz fräNswäz´ d lä bm l bläN d lä välyr´) (KEY) , 16441710, mistress of King Louis XIV of France. Maid of honor to Louiss sister-in-law, Henrietta of England, she became the kings mistress in 1661. She bore him four children, of whom two died in infancy. In 1667, by the same government act that legitimized her daughter, she was created duchess. She was replaced in the kings affections by Mme de Montespan. In 1674 she retired to a Carmelite convent and became celebrated for her piety.