Maîtresse-en-titre in the context of "Louise Françoise de Bourbon"

Françoise-Athénaïs de Rochechouart de Mortemart, Marquise of Montespan (5 October 1640 – 27 May 1707), commonly known as Madame de Montespan (French: [madam də mɔ̃tɛspɑ̃]), was a French noblewoman and the most celebrated royal mistress of King Louis XIV. During their romantic relationship, which lasted from the late 1660s to the late 1670s, she was sometimes referred to by contemporaries as the "true Queen of France" due to the pervasiveness of her influence at court. She was a great-grandmother to Louis Alexandre, Prince of Lamballe, who was the husband to Maria Luisa of Savoy, also known as the Princesse de Lamballe.

Born into the House of Rochechouart, one of the oldest noble families of France, Françoise-Athénaïs married the Marquis of Montespan in 1663. She then became a maid of honour to Princess Henrietta, Duchess of Orléans, and later a lady-in-waiting to Queen Maria Theresa. Noted for her great beauty and wit, she carefully cultivated a relationship with Louis XIV and eventually supplanted Louise de La Vallière as his favourite. She had seven children by the king, six of them later legitimised but only four survived infancy. She mostly entrusted her children to Madame Scarron, who as the Marquise de Maintenon was later to replace her in the king's affections.

A royal mistress is the historical position and sometimes unofficial title of the extramarital lover of a monarch or an heir apparent, who was expected to provide certain services, such as sexual or romantic intimacy, companionship, and advice in return for security, titles, money, honours, and an influential place at the royal court. Thus, some royal mistresses have had considerable power, being the power behind the throne. The institution partly owes its prevalence to the fact that royal marriages used to be conducted solely on the basis of political and dynastic considerations, leaving little space for the monarch's personal preferences in the choice of a partner.

The title of royal mistress was never official, and most mistresses had an official reason to be at the court, such as being a lady-in-waiting or maid-of-honour to a female member of the royal family or a governess to the royal children. However, their real position was most often an open secret, and there was no real division between formal and informal political power in the early French court. From the 15th century onward and most importantly in France, chief mistresses gained a semi-official title (French: maîtresse-en-titre, literally "official mistress"), which came with its own assigned apartments in the palace. A chief mistress was also sometimes called a maîtresse déclarée, or "declared mistress". An unacknowledged, less important royal lover was known as a petite maîtresse ("little mistress").

Françoise d'Aubigné (27 November 1635 – 15 April 1719), known first as Madame Scarron and subsequently as Madame de Maintenon (French: [madam də mɛ̃t(ə)nɔ̃] ), was a French noblewoman and the second wife of Louis XIV of France from 1683 until his death in 1715. Although she was never considered queen of France, as the marriage was carried out in secret, Madame de Maintenon had considerable political influence as one of the King's closest advisers and the governess of the royal children.

Born into an impoverished Huguenot noble family, Françoise married the poet Paul Scarron in 1652, which allowed her access to the Parisian high society. She was widowed in 1660, but later saw her fortunes improve through her friendship with Louis XIV's mistress, Madame de Montespan, who tasked her with the upbringing of the king's extramarital children. She was made royal governess when the children were legitimised, and in 1675 Louis XIV granted her the title Marquise de Maintenon. By the late 1670s, she had essentially supplanted Montespan as the king's maîtresse-en-titre.

Jeanne Antoinette Poisson, Marquise de Pompadour (/ˈpɒmpədʊər/, French: [pɔ̃paduʁ] ; 29 December 1721 – 15 April 1764), commonly known as Madame de Pompadour, was a member of the French court. She was the official chief mistress of King Louis XV from 1745 to 1751, and remained influential as court favourite until her death.

Pompadour took charge of the king's schedule and was a valued aide and advisor, despite her frail health and many political enemies. She secured titles of nobility for herself and her relatives, and built a network of clients and supporters. She was particularly careful not to alienate the popular Queen, Marie Leszczyńska. On 8 February 1756, the Marquise de Pompadour was named as the thirteenth lady-in-waiting to the queen, a position considered the most prestigious at the court, which accorded her with honors.

The Grand Trianon (French pronunciation: [ɡʁɑ̃ tʁijanɔ̃]) is a French Baroque style château situated in the northwestern part of the Domain of Versailles in Versailles, France. It was built at the request of Louis XIV as a retreat for himself and his maîtresse-en-titre of the time, the Marquise de Montespan, and as a place where he and invited guests could take light meals (collations) away from the strict etiquette of the royal court. The Grand Trianon is set within its own park, which includes the Petit Trianon (a smaller château built in the 1760s, during the reign of Louis XV).

Diane de Poitiers (9 January 1500 – 25 April 1566) was a French noblewoman and courtier who wielded much power and influence as King Henry II's royal mistress and adviser until his death. Her position increased her wealth and family's status. She was a major patron of French Renaissance architecture.