She is and she is not; a fragment of the true history of Miss C. de G., alias Mrs. Potter, &c., &c., exhibiting a series of ... artifices ... in the course of her transactions with the Earl of Lauderdale, in ... 1764 and 1765, &c., dedicated to Mrs. M-t C-e R-dd [Margaret Caroline Rudd, being an attempt to identify her with C. de G.]