Geoffrin, Marie Thérèse, a French patroness of letters, born at Paris, the daughter of a valet-de-chambre; in her fifteenth year she married a wealthy merchant, whose immense fortune she inherited; her love of letters—which she cherished, though but poorly educated herself—and her liberality soon made her salon the most celebrated in Paris; the encyclopédists, Diderot, D'Alembert, and Marmontel, received from her a liberal encouragement in their great undertaking; Walpole, Hume, and Gibbon were among her friends; and Stanislas Poniatowsky, who became king of Poland, acknowledged her generosity to him by styling himself her son and welcoming her royally to his kingdom (1699‒1777).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Geoffrey Saint-Hilaire, Étienne * George I.