Which preposition to use with whisperers

of Occurrences 2%

The birth of the dauphin had been a fatal blow to the hopes which had been founded on the possible succession of the king's brothers; and from this time forth the whisperers of detraction and calumny were more than ever busy, sometimes venturing to forge her handwriting, and sometimes daring, with still fouler audacity, to invent stories designed to tarnish her reputation by throwing doubts on her conjugal fidelity.

about Occurrences 2%

The Island of Barbadoes (a shrewd People) manage all their Appeals to Great-Britain, by a skilful Distribution of Citron-Water among the Whisperers about Men in Power.

with Occurrences 2%

The first Step they usually take, is to find from a Correspondence, by their Messengers and Whisperers with some Domestick of the Batchelor (who is to be hunted into the Toils they have laid for him) what are his Manners, his Familiarities, his good Qualities or Vices; not as the Good in him is a Recommendation, or the ill a Diminution, but as they affect or contribute to the main Enquiry, What Estate he has in him?

in Occurrences 1%

It is the unfortunate situation of arbitrary kings, that they know the sentiments of their people only from whisperers in their closet.

Which preposition to use with  whisperers