Dear Sister,--I write to you at the desire of Lady Yarmouth, on an Incident of a particular nature, and which has given her Ladyship so much uneasiness that it will be a very agreeable office, if you can contribute, by a letter to some Lady of the Court at Versailles, to the clearing up of a very odd Qui pro Quo. The matter in question is as follows. Letters to England from our Army having been taken, there is amongst them _one_ from Lady Betty Waldgrave to General Waldgrave _unsign'd_. the writer desires the General will _direct his letters to Lady Yarmouth at Kensington_. on this ground the letter in question being attributed, in France, to Lady Yarmouth has drawn attention, been translated, and handed about, as she is inform'd, with some mirth at Versailles and Paris. this letter is return'd, by the channel of Selwyn's House, and Lady Yarmouth finds it to contain, not only the expressions of a loving wife to a Husband, but a strain of political reflections, together with observations on very high Personages in Europe, commanding Armies in Germany; all which Language cou'd not but bear a very prejudicial Comment, if really attributed to the Lady, by whose desire I now write to you. You are the best judge how to acquit yourself of the Commission you are desired to charge yourself with; whether by writing to the Dutchess of Mirepoix or any other of your friends. I can only say, that I perceive Lady Yarmouth will think Herself obliged to you for such an intervention, in a matter of some Delicacy, and which might have many possible ill Consequences. if you shall write in the manner desir'd, and will send your letter directed to your Correspondent, under Cover to me, I will take care it shall go in Count Very's packet to Paris. I rejoice extremely my Dear Sister, at the account of your amendment in Spirits, since your late attack. keep the ground so hardly won, and ascend, by courage and perseverance that arduous steep, on the Summit of which, Health and Happiness, I trust, still wait you. I am lame in one foot, and much threatened with Gout for some days past; but I flatter myself that it may blow over, like an Autumnal ruffle. our Expeditions are, I fear, lame in both Feet. My Messenger is order'd to wait your full leisure. I am Dear Sister, Your most affectionate Brother W. PITT. Ann appears to have been successful, and receives thanks both from William and the formal Lady Hester.