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Louis César de La Baume Le Blanc

1708 – 1780

French nobleman, bibliophile and military man

BibliophileMilitary personnel
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About Louis César de La Baume Le Blanc

Lived 1708 – 1780 (aged 72). Louis César de La Baume Le Blanc was a French bibliophile and military personnel.

Louis César de La Baume Le Blanc , duc de Vaujours, duc de La Vallière (9 October 1708 – 16 November 1780), was a French nobleman, bibliophile and military man. The present duc d'Uzès and duc de Luynes descend from him.

Early life Louis César was the son of Charles François de La Baume Le Blanc, marquis and then duc de La Vallière, and his wife, Marie Thérèse de Noailles, a daughter of Anne Jules de Noailles, duc de Noailles.

His father was a nephew of Louise de La Vallière, the first official mistress of King Louis XIV. On his father's side of the family, Louis César's relatives at court included Louise de La Vallière's daughter by Louis XIV, Marie Anne de Bourbon, princesse de Conti. On his mother's side, his aunt was Marie Victoire de Noailles, the wife of Louis Alexandre de Bourbon, comte de Toulouse, and mother of Louis Jean Marie de Bourbon, duc de Penthièvre, the wealthiest man in France during Louis César's lifetime. His uncle, Adrien Maurice de Noailles, married Françoise Charlotte d'Aubigné, the niece of Madame de Maintenon. Another cousin was Louis de Pardaillan de Gondrin, duc d'Antin, a great-grandson of Madame de Montespan.

When Louise de La Vallière left Versailles for a religious life after her displacement in the king's affections by Madame de Montespan, she gave the duchies of Vaujours and La Vallière to her daughter, the princesse de Conti. The princess sold them in 1698 to Louis César's father. From his birth, Louis César was known at court as the marquis de La Vallière. His father retained the Vaujours title for himself until his own death in 1739.

In 1727, at the early age of nineteen, Louis César was promoted to the rank of colonel of the regiment under the title of duc de La Vallière. In 1730, his father also gave him the duchy of Vaujours. With this new title came the rank of pair de France. Even though his father officially gave up the duchy in 1732, he was still styled at court as the duc de Vaujours.

Career

Upon his father's death in 1739, Louis César became the new duc de La Vallière and was made the governor of Bourbonnais. In addition, he inherited the Château de Champs-sur-Marne. Around 1750, he added a beautiful rococo salon chinois (Chinese salon) to the château with wall paintings by noted artist Christophe Huet. The property had been given to his father by his cousin, the princesse de Conti, in 1718 in order to settle some debts. At the château, Louis César entertained many of the famous writers of the day, including Diderot, Voltaire, d'Alembert and François-Augustin de Paradis de Moncrif, with whom he also corresponded regularly.

Monsieur de La Vallière was also created the Captain of the Hunt by Louis XV as well as the Grand Falconer of France in 1748. Louis XV respected him, and Louis César became close with the king's mistress, the famous Madame de Pompadour, who named him the master of her private theatre. In 1749, the king bestowed upon him the Order of the Holy Spirit in a ceremony which took place at the Palace of Versailles on 25 May. The order was the most prestigious in France.

After the construction of a magnificent new château at Montrouge around 1750, the duke gradually abandoned the Château de Champs-sur-Marne. Eventually, he tried to sell the estate, but he could not find a buyer and was forced to rent it out. Between July 1757 and January 1759, he leased the estate to Madame de Pompadour for 12,000 livres per year. The marquise spent 200,000 livres in less than eighteen months to renovate the château. In November 1757, she received the prince de Soubise after his defeat at the Battle of Rossbach. As the king did not like the château, the marquise left it at the beginning of 1759. In 1763, the duke finally sold Champs to Gabriel Michel de Tharon (1702–1765), a rich shipowner.

Louis César was one of the greatest bibliophiles of his time. With the assistance of his librarian, the abbé Rive, he bought entire libraries and sold whatever he already had. His great library was eventually sold in three stages, first in 1767; then in 1783 and again in 1788 . Part of the famous collection was acquired by the Comte d'Artois, brother of Louis XVI and future king of France. That part of the library was incorporated into the Bibliothèque de l'Arsenal in Paris.

The duke also wrote two books: Ballets, opera, et autres ouvrages lyriques (1760) and the Bibliothèque du Théâtre-Français (1768, 3 vol. in-12). The latter was edited by Barthélemy Mercier de Saint-Léger.

Personal life In 1732, Louis César married Jeanne Julie Françoise de Crussol d'Uzès, the daughter of Jean Charles de Crussol, 7th Duke of Uzès. His wife was a member of the House of Crussol, the most important peers in France after that of the Princes of the Blood. Louis César and his wife, Jeanne Julie Françoise, had only one child, a daughter.

Adrienne Emilie Félicité de La Baume Le Blanc (1740–1812), duchesse de Châtillon et de La Vallière, dame de Wideville, who married Louis Gaucher, duc de Châtillon, in 1756 and had issue.

As the duchy of La Vallière had previously been held by several women, including Louise de La Vallière and her daughter, the princesse de Conti, his daughter was able to inherit the title. On her death, however, the title became extinct.

Ancestry

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Important facts

Birth century
Occupation
Bibliophile, military personnel
Nationality
Positions held
Grand Falconer of France, Governor
Awards
Knight of the Order of the Holy Spirit; Knight of the Order of Saint Michael; Order of the Holy Spirit; Order of Saint Michael
Also known as
Louis-César de la Baume Le Blanc, Duc de La Vallière, Louis-César de la Baume Le Blanc La Vallière Duc de, Louis Cesar de La Baume Le Blanc, Louis-Cesar de la Baume Le Blanc La Valliere Duc de, Louis César duc de La Vallière
moreLouis César de La Baume le Blanc, 3.Duc de la Vallière

Family & relationships

Parent
Anne Jules de Noailles

People in Louis César de La Baume Le Blanc's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Louis César de La Baume Le Blanc's

Frequently asked questions

Who was Louis César de La Baume Le Blanc?

French nobleman, bibliophile and military man

When was Louis César de La Baume Le Blanc born?

Louis César de La Baume Le Blanc was born on 9 October 1708 in Paris.

When did Louis César de La Baume Le Blanc die?

Louis César de La Baume Le Blanc died on 16 November 1780 in Paris.

What was Louis César de La Baume Le Blanc's occupation?

Louis César de La Baume Le Blanc was a bibliophile and military personnel.

What nationality was Louis César de La Baume Le Blanc?

Louis César de La Baume Le Blanc was French.

Sources & further reading

· Wikipedia: Louis César de La Baume Le Blanc

· Wikidata: Q1158739

· DBpedia: Louis César de La Baume Le Blanc

Cite this page

APA: Biography.guide. (2026). Louis César de La Baume Le Blanc. https://biography.guide/louis-cesar-de-la-baume-le-blanc/

MLA: "Louis César de La Baume Le Blanc." Biography.guide, https://biography.guide/louis-cesar-de-la-baume-le-blanc/.

Chicago: "Louis César de La Baume Le Blanc." Biography.guide. https://biography.guide/louis-cesar-de-la-baume-le-blanc/.

Data last updated: 2026-09-26 · Spot an error? Report a correction.

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