Which preposition to use with mitigation

of Occurrences 66%

I only move for a mitigation of punishment, and will state the circumstances upon which I base my appeal to the clemency of the court.

for Occurrences 3%

Had it been in self-defenseeven in the heat of uncontrollable angershe could have found mitigation for Jack; but there was neither the justification of self-defense nor the plausible pretext of anger.

in Occurrences 3%

As that people were now so thoroughly subdued that they no longer aspired to the recovery of their ancient liberties, and were content with the prospect of some mitigation in the tyranny of the Norman princes, they zealously embraced William's cause, upon receiving general promises of good treatment, and of enjoying the license of hunting in the royal forests.

before Occurrences 1%

Pleading in mitigation before Lord Ellenborough that he attended public worship in the country, he received the rebuke, "as if there were no God in town.'

to Occurrences 1%

Kings and emperors naturally were more alive to the usefulness of subjects who could gather and yield money; but edicts issued to protect "the King's Jews" equally with the King's game from being harassed and hunted by the commonalty were only slight mitigations to the deplorable lot of a race held to be under the divine curse, and had little force after the Crusades began.

Which preposition to use with  mitigation