Which preposition to use with defamations

of Occurrences 12%

She threw such a strong bluff about suing him for defamation of character that he came across with two hundred cold to keep her quiet.

before Occurrences 1%

And Mrs. Chalmers brought an action of defamation before the Commissaries, and it came by advocation into this Court, and your Lordships allowed a proof of the veritas convicii, and it lasted a very long time, and in the end answered no good purpose even to the defender herself, while it did much hurt to the pursuer's character.

on Occurrences 1%

DIVORCE: Absolute or limited for adultery, condemnation to an infamous punishment, habitual and intolerable intemperance, insupportable excess or outrages, public defamation on the part of one of the married persons toward the other, desertion, attempted murder, proof of guilt of husband or wife who has fled from justice when charged with an infamous offence.

with Occurrences 1%

The causes why married partners who do not mutually love each other, are yet jealous, are principally the honor resulting from power, the fear of defamation with respect both to the man himself and also to his wife, and the dread lest domestic affairs should fall into confusion.

Which preposition to use with  defamations