Which preposition to use with mistrustful

of Occurrences 3%

Thereupon Turnus and the Rutulians, mistrustful of their strength, had recourse to the prosperous and powerful Etruscans, and their king Mezentius, whose seat of government was at Cære, at that time a flourishing town.

in Occurrences 1%

We had then to wait at least four days; people are suspicious and mistrustful in cities, and if no relief should come, what was to be done?

than Occurrences 1%

Our funds were insufficient to pay even this; but Captain Morgan, less mistrustful than my Norman landlord, generously agreed that the remainder of the fare should be paid in America.

Which preposition to use with  mistrustful