After the death of Louise Henriette on 9 February 1759 at the Palais-Royal, the Orléans residence in Paris, Louis Philippe took as his mistress Étiennette Le Marquis, a former dancer who liked to act in comedy plays, and who introduced him into the world of the theater.
At that time, the château de Bagnolet, which he had inherited from his father, became his favorite residence.
Louis Philippe had three children with Étiennette; they were raised under the care of the Orléans family:
Louis Étienne d'Orléans, (21 January 1759 – 24 July 1825), Count-abbé of Saint-Phar
Louis Philippe d'Orléans, (7 July 1761 – 13 June 1829), Count-abbé of Saint-Albin,
Marie Étiennette Perrine d'Auvilliers, (7 July 1761 -), who married François-Constantin, Count of Brossard, a dragoon regiment officer.

In 1769, Louis Philippe sold Bagnolet and bought the Château du Raincy, located less than ten miles east from the center of Paris.
The same year, his son Louis Philippe, married Louise Marie Adélaïde de Bourbon, heiress to the fortune of her father, the Duke of Penthièvre.
Louis Philippe had wanted his son to have a prestigious marriage with the Polish princess Maria Kunigunde, the youngest daughter of Augustus III of Poland and Maria Josepha, Archduchess of Austria.
Princess Maria Kunigunde was the sister of the deceased Dauphine of France (1731–1767), mother of Louis XVI.

It was the King Louis XV who opposed this marriage on the pretence that the princess was too old for the young Duke of Chartres.
This caused the Duke of Penthièvre to ask if the Duke of Orléans if he would allow a union with the Orléans family.
Louis Philippe is said to have rejected the idea of his son marrying Mademoiselle de Penthièvre due to her bastard race; this is an irony in itself due to Louis Philippe and the Duke of Penthièvre were both descended from two daughters of Louis XIV and Madame de Montespan.
After the death of Louise Henriette on 9 February 1759 at the Palais-Royal, the Orléans residence in Paris, Louis Philippe took as his mistress Étiennette Le Marquis, a former dancer who liked to act in comedy plays, and who introduced him into the world of the theater. At that time, the château de Bagnolet, which he had inherited from his father, became his favorite residence. Louis Philippe had three children with Étiennette; they were raised under the care of the Orléans family:
Louis Étienne d'Orléans, (21 January 1759 – 24 July 1825), Count-abbé of Saint-Phar
Louis Philippe d'Orléans, (7 July 1761 – 13 June 1829), Count-abbé of Saint-Albin,
Marie Étiennette Perrine d'Auvilliers, (7 July 1761 -), who married François-Constantin, Count of Brossard, a dragoon regiment officer.
In 1769, Louis Philippe sold Bagnolet and bought the Château du Raincy, located less than ten miles east from the center of Paris. The same year, his son Louis Philippe, married Louise Marie Adélaïde de Bourbon, heiress to the fortune of her father, the Duke of Penthièvre. Louis Philippe had wanted his son to have a prestigious marriage with the Polish princess Maria Kunigunde, the youngest daughter of Augustus III of Poland and Maria Josepha, Archduchess of Austria. Princess Maria Kunigunde was the sister of the deceased Dauphine of France (1731–1767), mother of Louis XVI.
It was the King Louis XV who opposed this marriage on the pretence that the princess was too old for the young Duke of Chartres. This caused the Duke of Penthièvre to ask if the Duke of Orléans if he would allow a union with the Orléans family. Louis Philippe is said to have rejected the idea of his son marrying Mademoiselle de Penthièvre due to her bastard race; this is an irony in itself due to Louis Philippe and the Duke of Penthièvre were both descended from two daughters of Louis XIV and Madame de Montespan.
Louis Philippe I, Duke of Orléans