Madame de Montespan
Françoise Athénaïs de Rochechouart, Marquise de Montespan, (1641-1707), mistress of Louis XIV, king of France. She married (1663) the marquis de Montespan and became mistress of the king in 1667. She left the court in 1687 and later joined a convent. The children that she bore the king were legitimatized in 1673.

"Montespan, Francoise Athenais de Rochechouart,  ," Microsoft (R) Encarta. Copyright (c) 1994 Microsoft Corporation. Copyright (c) 1994 Funk & Wagnall's Corporation.
Memoirs Of Madame de Montespan
http://www.lib.umd.edu/ETC/ReadingRoom/Historical/Montespan/