In 1924, Louis de Broglie proposed that all particles behave to an extent like waves.

* 1706 – Louis de Cahusac, French playwright and librettist, and Freemason ( d. 1759 )

* 1644 – Louise de La Vallière, French mistress of Louis XIV of France ( d. 1710 )

de Pompadour, Louis XV's mistress, who was considered the most powerful woman in France at the time.

* 1779 – Louis de Freycinet, French explorer ( d. 1842 )

* 1892 – Louis de Broglie, French physicist, Nobel Prize laureate ( d. 1987 )

* 1767 – Louis Antoine de Saint-Just, French military leader and politician ( d. 1794 )

** Louis de Montfort

In 1752, the French astronomer Nicolas Louis de Lacaille subdivided it into Carina ( the keel, or the hull, of the ship ), Puppis ( the poop deck, or stern ), and Vela ( the sails ).

Antlia was created in 1756 by the French astronomer Abbé Nicolas Louis de Lacaille, who created fourteen constellations for the southern sky to fill some faint regions.

De Amore was written at the request of Marie de Champagne, daughter of King Louis VII of France and of Eleanor of Aquitaine.

Louis de Wohl worked as an astrologer for the British intelligence agency MI5, after it was claimed that Hitler used astrology to time his actions.

* 1713 – Louis, 4th duc de Noailles, French peer and Marshal of France ( d. 1793 )

* Schmidt, Hanns Peter: The Origin of Ahimsa, in: Mélanges d ' Indianisme à la mémoire de Louis Renou, Paris 1968

Toward the latter half of the 17th century, Louis XIV founded his ' Académie Royale de Musique et de Danse ', where specific rules for the execution of every dance and the " five positions " of the feet were formulated for the first time by members of the Académie.

After the French chemists Louis Nicolas Vauquelin, Louis Jacques Thénard, and Joseph-Louis Gay-Lussac approved the experiments of the young pharmacist Balard, the results were presented at a lecture of the Académie des Sciences and published in Annales de Chimie et Physique.

" Approval from Louis arrived on 27 June: Tallard was to reinforce Marsin and the Elector on the Danube via the Black Forest, with 40 battalions and 50 squadrons ; Villeroi was to pin down the Allies defending the Lines of Stollhofen, or, if the Allies should move all their forces to the Danube, he was to join with Marshal Tallard ; and General de Coignies with 8, 000 men, would protect Alsace.

In addition to Bonaparte himself, Louis Alexandre Berthier, Auguste de Marmont, Jean Lannes, Joachim Murat, Louis Desaix, Jean Reynier, Antoine-François Andréossy, Jean-Andoche Junot, Louis-Nicolas Davout and Dumas were all passengers on the cramped Mediterranean crossing.

The Saint-Esprit church was part of a bigger complex built by Louis XI to care for pilgrims to Santiago de Compostela.

* http :// www. chateaudevayres. com / home. html In French and English, with views of the Castle by Louis de Foix, the 16th century French Engineer who deviated the River Adour near Bayonne.

A costume design for Louis XIV as The Rising Sun, from the final entrée of Le Ballet de la Nuit ( 1653 ).

Then the king came to the Haye in Touraine and his men had passed the river of Loire, some at the bridge of Orléans and some at Meung, at Saumur, at Blois, and at Tours and whereas they might: they were in number a twenty thousand men of arms beside other ; there were a twenty-six dukes and earls ( Counts ) and more than sixscore banners, and the four sons of the king, who were but young, the duke Charles of Normandy, the lord Louis, that was from thenceforth duke of Anjou, and the lord John duke of Berry, and the lord Philip, who was after duke of Burgoyne ".

Louis became involved in a war with Count Theobald of Champagne by permitting Raoul I, Count of Vermandois and seneschal of France, to repudiate his wife Eléonore of Blois, Theobald's sister, and to marry Petronilla of Aquitaine, Eleanor's sister.

Stephen's accession to the throne still needed to be ratified by the Pope, however, and Henry of Blois appears to have been responsible for ensuring that testimonials of support were sent both from Stephen's elder brother Theobald and from the French king Louis VI, to whom Stephen represented a useful balance to Angevin power in the north of France.

* January 7 – Louis de Blois, Flemish mystical writer ( b. 1506 )

* October – Louis de Blois, Flemish mystical writer ( d. 1566 )

** Louis I, Count of Blois ( d. 1205 )

* September 22 – Treaty of Blois: Philip I of Castile, Maximilian I and Louis XII agree terms.

Around 300 knights were killed, including Louis of Blois, Duke of Nicaea and Baldwin was captured and later died in captivity.

His mother's children by her first marriage to Louis VII of France were Marie of France, Countess of Champagne and Alix of France, Countess Blois.

On 23 December 1588, at the Château de Blois, the Duke of Guise arrived in the council chamber where his brother Louis II, Cardinal of Guise, waited.

Louis was born on 27 June 1462, in the Château de Blois, Blois, Touraine ( in the contemporary Loir-et-Cher département ).

Flamboyant Gothic equestrian Louis above the main door of the Château de Blois

Constant wars with many of the major powers in Europe rendered a significant marriage with a foreign princess unlikely, or so Louis XIV told his brother, Monsieur, when persuading him to accept the king's legitimised daughter, Françoise Marie de Bourbon ( known as Mademoiselle de Blois ), as wife for Philippe.

The medieval castle was purchased in 1391 by Louis, duc d ' Orléans, brother of Charles VI ; after Louis ' assassination, his widow, Valentina Visconti, retired to this castle at Blois.

In 1576 and 1588 Henri III, king of France, chose Blois as the meeting-place of the States-General, and in 1588 he brought about the murders of Henry, duke of Guise, and his brother, Louis, archbishop of Reims and cardinal, in the Château, where their deaths were shortly followed by that of the queen-mother, Catherine de ' Medici.

The famous Château de Blois, a Renaissance château once occupied by King Louis XII, is located in the centre of the city, and an 18th century stone bridge spans the Loire.

Stephen's accession to the throne still needed to be ratified by the Pope, however, and Henry of Blois appears to have been responsible for ensuring that testimonials of support were sent both from Stephen's elder brother Theobald and from the French king Louis VI, to whom Stephen represented a useful balance to Angevin power in the north of France.

During the July 1203 siege, Henry was one of eight division generals, the others including Boniface of Montferrat ( the crusade leader ), Doge Enrico Dandolo ( leader of the Venetians ), Louis of Blois ( one of the first nobles to take the cross ), and Henry's own brother, Baldwin of Flanders, who controlled the largest division.

After an apparent conciliation between the French king and the duke, in December of 1588 King Henry III had both the Duke of Guise and his brother, Louis of Lorraine, Cardinal of Guise ( 1555 – 1588 ), murdered during a meeting in the Royal Chateau at Blois.

Jacques-Donatien Le Ray de Chaumont served King Louis XVI at the Court at Versailles as the Governor of Les Invalides in Paris and the Grand Master of Waters and Lands of Blois.

Louis XII, who had inherited the library at Blois, incorporated the latter into the Bibliothèque du Roi and further enriched it with the Gruthuyse collection and with plunder from Milan.

It was established as a devotion with prayers already formulated and special exercises, found in the writings of Lanspergius ( d. 1539 ) of the Carthusians of Cologne, the Louis of Blois ( Blosius ; 1566 ), a Benedictine and Abbot of Liessies in Hainaut, John of Avila ( d. 1569 ) and St. Francis de Sales, the latter belonging to the seventeenth century.