Louise Henriette Françoise
Duchess of Bouillon
Coat-of-arms of the count of Harcourt
Born	1707 France
Died	31 March 1737 (aged 29–30) Hôtel de Bouillon, Paris, France
Spouse	Emmanuel Théodose de La Tour d'Auvergne
Issue Detail	Marie Sophie Charlotte, Princess of Beauvau
Names Louise Henriette Françoise de Lorraine
House	Lorraine
Father	Anne Marie Joseph, Count of Harcourt
Mother	Marie Louise Jeannin de Castille

Louise Henriette Françoise de Lorraine (1707 – 31 March 1737) was a French noblewoman and member of the House of Guise, a cadet branch of the House of Lorraine. She was the last wife of Emmanuel Théodose de La Tour d'Auvergne (1668–1730).

The eldest of four children, her other surviving sister Marie Elisabeth Sophie de Lorraine was the wife of Louis François Armand de Vignerot du Plessis. Prior to her marriage, she was styled as Mademoiselle de Guise.

A member of the House of Guise founded by Claude, Duke of Guise,^[1] she was a Princess of Lorraine as a patrilineal descendant of René II, Duke of Lorraine. At court, she, like his Lorraine family, held the rank of Foreign Prince, a rank which was below that of the immediate Royal Family and Princes of the Blood. This also allowed her the style of Her Highness.

Family relations included Emmanuel Maurice, Duke of Elbeuf, second cousin of her husband via Emmanuel Maurice's mother Élisabeth de La Tour d'Auvergne.^[2] Others included the Abbess of Remiremont, Princess of Epinoy and a Queen consort of Sardinia.

She was described as very pretty; rather tall than short; neither stout nor slender; an oval face; a broad forehead; black eyes and eyebrows; brown hair; very wide mouth and very red lips .^[3]

Married on 21 March 1725, the couple did not have a child until four years later. They had a daughter named Marie Sophie Charlotte who is an ancestor of the present Dukes of Mouchy, a cadet branch of the House of Noailles. Her husband died in 1730, leaving Louise Henriette Françoise a widow at the age of 23.

There are theories that the Duchess of Bouillon poisoned the famous contemporary actress Adrienne Lecouvreur, but scholars have not been able to confirm the accusation.^[4]

Louise Henriette Françoise later became the mistress of her stepson, Charles Godefroy de La Tour d'Auvergne, who was one year older than she was. Another lover was the Count of Clermont, a grandson of Louis XIV and Madame de Montespan through their daughter the Duchess of Bourbon.

She died in March 1737 at the age of roughly 30. Her brother cousin Gaston married Marie Louise de Rohan, sister of Charles, Prince of Soubise. Charles, in turn, was the husband of her stepdaughter Anne Marie Louise.

• Marie Sophie Charlotte de La Tour d'Auvergne (20 December 1729–6 September 1763) married Charles Just de Beauvau, son of Marc de Beauvau, Prince of Beauvau and had issue. Present Duke of Noailles descends from her.