Madame de Ventadour

Charlotte de La Motte Houdancourt, Duchess of Ventadour was the governess of King Louis XV of France, greatgrandson of King Louis XIV. She is credited with saving Louis XV from the ministrations of the royal doctors when he was ill as a child. She was the Gouvernante des enfants royaux, Governess of the Children of France like her mother, granddaughter, granddaughter in law and great grand daughter.

Charlotte and Louis Charles had one daughter, Anne Genevive de Lvis, born in February 1673. Anne Genevive first married in 1691 LouisCharles de la Tour dAuvergne, prince de Turenne, the son of Maurice Godefroy de La Tour dAuvergne, Duke of Bouillon, and his wife, Marie Anne Mancini.

Source: Wikipedia