Which preposition to use with guileless

as Occurrences 5%

Peter would not do any harmhe was as guileless as a blue-eyed Angora kitten, and above all, he was willing and anxious to get into the game.

of Occurrences 4%

Even the most guileless of lodge-keepers would be bound to think it rather curious that I should be creeping out at this time of night accompanied by his master's bicycle.

in Occurrences 2%

There was something so earnest and guileless in the way this was said that Nicholas could not resist it.

Which preposition to use with  guileless