1. 
Jules de Polignac
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Born in Versailles, Jules was the younger son of Jules, 1st Duke of Polignac, and Gabrielle de Polastron, a confidante and favourite of Queen Marie-Antoinette.  Due to his mothers privileged position, the young Jules was raised in the environment of the court of Versailles, where his family occupied a luxurious suite of thirteen rooms.  His sister, Aglaé, was married to the duc de Guîche at a young age, in 1789, the outbreak of the French Revolution, Juless mother and her circle were forced to flee abroad due to threats against their lives.  Gabrielle had been one of the most consistent supporters of absolutism, princess Seyna-Camille After her death in 1819, he married in London on 3 June 1824 Charlotte, Comtesse de Choiseul, widow of Comte Cesar de Choiseul, née Honourable Charlotte Parkyns.  in 1824.  He had met her while she was renewing her passport at the London embassy and they had 5 children, of whom two were born while their father was in prison.  Prince Alphonse born during his fathers ambassadorship in London and he entered Polytechnique in 1849 and formulated Polignacs conjecture the same year.  He married Jeanne Emilie Mirès, and had one daughter.  He died some time after a public trial exonerated his father-in-law Jules Mirès of embezzlement.  Prince Charles Ludovic Marie or Louis, born during his fathers ambassadorship in London, he entered Polytechnique in 1851 and he married 1874 Gabriele Pss von Croy, with no issue.  Prince Yolande, named for his mother Gabrielle de Polastron, Duchess of Polignac and she was born shortly before her fathers incarceration as an Ultra.  She married 1848 Sosthène de La Rochefoucauld, duc de Doudeauville and he has issue and descendants through his eldest daughter Prince Edmond, later a noted musician and composer, who married Winnaretta Singer in a famous mariage blanc.  The couples marriage was annulled by the French Chamber of Peers, but Jules and Charlotte went to England after his release 1836, returning to France, which was then ruled by Napoleon Bonaparte, Jules continued in his zealous loyalty to the exiled Royal Family.  In 1804, a year after his sisters death, Jules was implicated in the conspiracy of Cadoudal and Pichegru to assassinate Bonaparte, after the restoration of the Bourbons, he was rewarded with various honours and positions.  He held various offices, received from the pope his title of prince in 1820, at the time, it was rumoured that Polignac supported ultra-royalist policies because he thought he was receiving inspiration from the Virgin Mary.  There is little evidence for this story, however.  There is no mention of such motivation in Polignacs personal memoirs or in the memoirs of the Restoration court.  On 8 August 1829 Charles X appointed him to the ministry of foreign affairs and in the following November Polignac became president of the council, upon the outbreak of revolt he fled, wandering for some time among the wilds of Normandy before he was arrested at Granville.  At his trial before the chamber of peers he was condemned and sentenced to imprisonment at the château in Ham

2. 
Yolande de Polastron
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She was considered one of the great beauties of pre-Revolutionary society, but her extravagance and exclusivity earned her many enemies.  Yolande Martine Gabrielle de Polastron was born in Paris in the reign of King Louis XV and her parents were Jean François Gabriel, Count of Polastron, seigneur de Noueilles, Venerque and Grépiac, and Jeanne Charlotte Hérault de Vaucresson.  As was customary with aristocrats, most of whom more than one Christian name.  While Gabrielle was still an infant, her parents moved to the family Château of Noueilles, when Gabrielle was three, her mother died and her welfare was entrusted to an aunt, who arranged for her to receive a convent education.  At the age of 16, Gabrielle was betrothed to Jules François Armand, comte de Polignac, marquis de Mancini, whom she married on 7 July 1767, polignacs family had a well-bred ancestry similar to Gabrielles family, and was in equally uncomfortable financial straits.  At the time of his marriage, Polignac was serving in the Régiment de Royal Dragons, within a few years of the marriage, Jules and Gabrielle had two children, a daughter Aglaé and a son.  Two more sons followed several years later, including Jules, prince de Polignac who became the minister of France in 1829.  Most surviving portraits show her to be pretty, one historian said that Gabrielle, in her portraits by Louise Élisabeth Vigée Le Brun, generally looks like some harvested and luscious fruit.  She had dark hair, very pale white skin and, perhaps most unusually.  Compiling the contemporary accounts of her, one historian has summarised her physical appearance thus.  With her cloud of dark hair, her big eyes, her neat nose, the cost of maintaining oneself at the court of Versailles was ruinous and Gabrielle replied that her husband did not have the money to finance a permanent move to the palace.  Determined to keep her new favourite by her side, the Queen agreed to settle the many outstanding debts.  She was, however, resented by other members of the entourage, particularly the Queens confessor and her chief political adviser.  Charismatic and beautiful, Gabrielle became the leader of the Queens exclusive circle.  She was considered by many of her friends to be elegant, sophisticated, in 1780, her husband was given the title of duc de Polignac, thus making her duchesse, a further source of irritation to the courtiers.  By the late 1780s, thousands of pornographic pamphlets alleged that Gabrielle was the Queens lesbian lover and those who were not themselves swept into the whirlpool, stood at the marge contemplating it with astonishment.  The Queens hand was guided by the violet-eyed, the lovely.  In 1782, the Governess to the Children of France, Victoire de Rohan, princesse de Guéméné, the Queen replaced the princess with Gabrielle