"What a pity one knows nothing, nor can know, about this Duke and Duchess, though their names, especially the latter's name, are much tossed to and fro in the Books! We heard of them, favorably, in Voltaire's time; and may again, at least of the Lady, who is henceforth a Correspondent of Friedrich's. The above is a dim direct view of them, probably our last as well as first. Duke's name is Friedrich III.; I do believe, a man of solidity, honor and polite dignified sense, a highly respectable Duke of Sachsen-Gotha, contented to be obscure, and quietly do what was still do-able in that enigmatic situation. He is Uncle to our George III.;--his Sister is the now Princess-Dowager of Wales, with a Lord Bute, and I know not what questionable figures and intrigues, or suspicions of intrigue, much about her. His Duchess, Louisa Dorothee, is a Princess of distinguished qualities, literary tastes,--Voltaire's Hostess, Friedrich's Correspondent: a bright and quietly shining illumination to the circle she inhabits. Duke is now fifty-eight, Duchess forty-seven; and they lost their eldest Son last year. There has been lately a considerable private brabble as to Tutorage of the Duke of Weimar (Wilhelmina's maddish Duke, who is dead lately; and a Prince left, who soon died also, but left a Son, who grew to be Goethe's friend); Tutorage claimed by various Cousins, has been adjudged to this one, King Friedrich co-operating in such result. "As to the famed Grand-Duchess, she is a Sachsen-Meiningen Princess, come of Ernst the Pious, of Johann the Magnanimous, as her Husband and all these Sachsens are: when Voltaire went precipitant, with such velocity, from the Potsdam Heaven, she received him at Gotha; set him on writing his HISTORY OF THE EMPIRE, and endeavored to break his fall. She was noble to Voltaire, and well honored by that uncertain Spirit. There is a fine Library at Gotha; and the Lady bright loves Books, and those that can write them;--a friend of the Light, a Daughter of the Sun and the Empyrean, not of Darkness and the Stygian Fens." [Michaelis, i. 517; &c. &c.] Friedrich's first Letter to her Highness was one of thanks, above a year ago, for an act of kindness, act of justice withal, which she did to one of his Official people. Here, on the morrow of that dinner, is the second Letter, much more aerial and cordial, in which style they all continue, now that he has seen the admired Princess. TO THE MOST SERENE GRAND-DUCHESS OF SACHSEN-GOTHA. DITTELSTADT, "16th September, 1757.