King Charles, in that characteristic way that made him most popular when most undeserving popularity, gave this superb beauty apartments in St. James's Palace and a pension of four thousand pounds sterling a year. The ball was at the feet of the adventuress. She at once became the centre of State intrigues, a party was formed around her. She saw herself on the point of dethroning, not the Queen, but the favourite, the all-powerful Duchess of Portsmouth. The corruption of the Court had reached the Parliament, and tinged even the patriotism of the people. The Duchess of Mazarin was chosen by Protestant England as the means of ridding the country from the harlot who had made it the satellite of France. They accepted her as the avenging champion; she at least was above-board and never resorted to trick or artifice. The situation is one of the most extraordinary spectacles in English history. Louis XIV. became alarmed. Ruvigny, honest Huguenot, was not the man to succeed in threading the maze of the foul diplomatic labyrinth in which he suddenly found himself by the success of the Duchesse de Mazarin. He suggested that, as the star of the Duchess of Portsmouth appeared to be declining, the French Court should throw her over and make terms with her rival. But the shrewd French Court was unwilling to desert a harlot whom they could trust for a harlot who had a grievance against them.

Ruvigny was replaced by the crafty Courtin, one of Louis' ablest servants. Before going to England he went to see the Duc de Mazarin in the hope of ingratiating himself with that Tartuffe-ridden man, as well as the nation to which he was accredited, by bringing the Duchesse news that her plea for a fitting maintenance, strongly backed by Charles to Louis, was heard. But he little understood the man he had to deal with. The Duc de Mazarin, thoroughly unable to admit that he had ever given the least cause for the scandalous conduct of his wife, demanded that she should return to France and suffer herself to be incarcerated in a convent. The answer of Madame de Mazarin, who was living sumptuously at St. James's and the object of almost universal admiration, was such as might have been expected.

When Courtin arrived in London the French influence seemed ruined at Whitehall. Every night Charles visited the fascinating Duchesse, and every day on repairing to the Duchess of York, his sister-in-law, who was ill at the time, he found the enchantress at her bedside. Nevertheless Courtin paid his court to the new favourite and studied her every action. "I saw Madame de Mazarin at High Mass at the chapel of the Portuguese ambassador, who is dying of love for her," he wrote to Louis, "but could not help noticing that she betrayed disgust at the length of the service." The conversion of England to Catholicism, no less than the French influence, seemed doomed by the sway of the fair agnostic. Her position was so important that Courtin advised Louis to force the Duc de Mazarin to accede to her demand that he should allow her fifty thousand a year of the Cardinal's fortune, send her her jewels, laces, and precious furniture, and swear never more to molest her if she returned to France. The great Louis humbled himself to plead with her; even the Abbé de St. Réal, who still hung about her and talked of Charles like an aggrieved husband, was not neglected. Courtin promised him the favour of the French Court.

But suddenly in the heyday of her triumph the fears and hopes that the Duchesse had raised to such a pitch were dashed by the Duchesse herself. She was not equal to the position; none of the Mancinis had the ambition or political instinct of their famous uncle, the Cardinal. Pleasure, not power, was what Madame de Mazarin really craved. Never had the enemies of the Duchess of Portsmouth leant on a weaker reed. As usual the Duchess let her heart get the better of her head; she flung herself, cost what it might, into the arms of the dashing Prince of Monaco, who was on a two months' visit to the English Court and stayed two years for sake of La Belle Mazarin. Her political rôle was over, and perhaps to no one connected with this intrigue did it give greater relief than to the protagonist herself. St. Réal, who had got together for his light-hearted mistress a good library, including such works as Appian and Tacitus, eaten up with jealousy, took the violent resolution of leaving England in the hope that she would call him back at Dover. But, as Forneron says, "she bore his absence with Roman fortitude and perhaps, like Louvois, who had perused some of his letters seized in the post, thought his room more agreeable than his company."

As for Charles, he was furious and stopped her pension. But Charles's furies never lasted long; like the Duchesse, whose character and exciting career closely resembled his own, he was too easy-going to cherish resentment. He gave her back her pension shortly afterwards, saying, "It was in repayment of sums advanced him years before by the Cardinal," and treated her henceforth as the best of friends. But this method of repaying debts was not at all to the fancy of the Duc de Mazarin. He despatched a friend to England to tell the King that he considered such payment valueless, to which Charles replied with a cynical laugh, "Quite so; I do not ask for a receipt."

Now began for the Duchesse the happiest and most brilliant period of her life. It lasted for the rest of the reign, during which, basking in the favour of the King and the Royal Family, and worshipped by the young Countess of Sussex, Charles's daughter by the Duchess of Cleveland, she gave herself up to a life of pleasure. The consideration she enjoyed gave her great influence, which, as she detested politics, she made no use of save to increase her credit with the tradespeople. At first she did not feel the chain of debt to which she was fastened. Courtin wrote to Louvois, "If you had seen her dancing the furlano to the music of a guitar, which she thrummed herself, you would have been captivated." To which Louvois replied, "If I were at the English Court, I am sure that all I should do would be to feast my eyes on Madame de Mazarin"—a curious sidelight on despatches of State of that day, considering, as Forneron says, that "the only serious man at Whitehall was the French Ambassador."

The taste that she had developed during her stay in Savoy for art and letters was now assiduously cultivated. Like a true femme galante of the seventeenth century, she coloured her very frivolities with an air of culture. But in the case of the Duchesse de Mazarin the cult of learning was not altogether an affectation by means of which she sought to gain the respect she had lost. She was an omnivorous reader, especially of philosophic works, and very fond of discussing what she read. If intellectually superficial, she was a brilliant conversationalist, and had the art of so disguising her thefts from the brains of the clever men whose society she really enjoyed that they were undiscovered. She could not write, but she could talk. In her salon, one of the first of the kind in England, all manner of subjects were discussed: philosophy, religion, history, wit, gallantry, the stage, music, art, ancient and modern literature. The use of the word "Vast" once gave rise to a controversy that was finally settled by an appeal to the French Academy. Intellectuality was the frame in which she set pleasure; for she still continued her life of aristocratic harlotry, and was sometimes among the number, from duchesses to demi-reps, that Chiffinch, the vicious but amusing concièrge of the back-stairs of Whitehall, smuggled of nights into the royal bedchamber. But these blots on her spiritual life, which possibly in our times in the case of such a woman might be excused by the words, "artistic temperament," required no excuse at all then. Moreover, Madame de Mazarin kept a good table and an open house—two means of silencing scandal that are not yet ineffective.

Among the men of distinction who comprised her little court were: the poet Waller, "who had visited several Courts and was at home in none"; Vossius, the sceptic prebendary of Windsor, "understanding most European languages and speaking none well, possessing a profound knowledge of the manners and customs of the ancients, but entirely ignorant of those of his contemporaries, talking as if he were commenting on Juvenal or Petronius, and at the very time he was writing books to prove the Divine inspiration of the Septuagint, intimating privately at Madame de Mazarin's that he believed in no revelation at all"; my Lord Rochester, who needs no description; the respectable Justel, whose Huguenot faith had made him an exile; and last, but not least, St. Evremond.

Of all the brilliant moths that flitted round the beauty, charm, and hospitality of the Duchesse de Mazarin, St. Evremond was the wittiest, gayest, best educated, most popular, and sincerest. He was over thirty years her senior, a man past sixty when she came to England, and, from the day of their meeting to the day of her death, Madame de Mazarin found in him a devoted friend and a sensible adviser. He was to her father-confessor and duenna in one; while her house was his to enter at will, her society his chief happiness, and her death the one real grief that perhaps he ever knew. The relation that existed between them was purely platonic; and if there are those who see merely a psychological phenomenon in a clean, honest attachment between an upright old philosopher and a young wayward woman, we prefer in this instance to claim it as a virtue for both. Madame de Mazarin's account at least in the Book of Life is so heavily against her that, without letting her off, we can afford to credit her with so small a virtue.