My 19th-century blogger, Miss Frances William Wynn, is today tackling one of the great political/society puzzles of the 18th century – who is Junius? Not that she finds an answer, or even has her own theory, but she has obviously done a lot of research on the subject.
Wikipedia would appear to do a good job of outlining the tale, and also of setting out the candidates.
Interesting that, one way or another, women seem to play such a prominent role in either shielding, or possibly revealing, the culprit.