"The Duchess...made court at the accession of the present family, by abusing Queen Anne to the Princess of Wales (afterwards Queen Caroline). One day relating her violent quarrel with her mistress, She said to the Queen, "then, Madam, you mean to bring over your Brother!" The Queen replied, "I wish I was sure he was my Brother!"—This implied two things, that She doubted whether he was genuine; & that if he was, She would bring him over. "And yet, continued the Duchess, the Creature (Caroline was shocked at such an expression used about a Queen—and might have been shocked more at the ingratitude of the Woman who used it), notwithstanding her letters, knew he was her brother." The Princess asked what She meaned by notwithstanding her letters—She meaned those the Queen had writ, and as She owned by her advice, as it was her then beleif, to persuade the Prince and Princess of Orange that Queen Mary of Este was not with child—which after King William came over, they found so much reason to doubt—enough, it is plain, to convince the Duchess that the Cheavlier was King James's Son."
January 1, 1970
https://en.wikiquote.org/wiki/Sarah_Churchill%2C_Duchess_of_Marlborough