Francoise, Marquise de Montespan, was born in Tonnay - Charente,
daughter of the Duc de Mortemart.
In 1663 she married the Marquis of Montespan and joined the household of
Queen Maria-Theresa as lady-in-waiting.

She became the King's Mistress c.1667 and after her marriage was annulled in 1674, she was given official recognition for her position as official mistress of the King.

She bore him seven children and her friend, Mme de Maintenon,
started to teach two of the King's  sons in 1669.

Eventually Mme de Montespan  was supplanted by Mlle de Fontanges
and then by Mme de Maintenon.
After the Queen's death in 1683, Louis XIV secretely married Mme de Maintenon who remained with him until his death in 1715.

In 1687,  Mme de Montespan left the Court and retired to the Convent of St-Joseph in Paris, where she eventually became the Superior.
  She died in 1707.