Which preposition to use with unafraid

of Occurrences 13%

He was evidently not only unafraid of them, but genuinely indifferent to them.

in Occurrences 2%

Unconscious of any listener, as she gathered the fruit of Nature's offering, she sang to the accompaniment of Nature's music, with the artless freedom of a wild thing unafraid in its native haunts.

through Occurrences 1%

But whereas his smooth, silent, secret face remained with me, and I knew him at a glance, it was, I judged, clean impossible that he could know the beardless stripling in the mustached leader of soldiers, walking well-accustomed and unafraid through palaces.

Which preposition to use with  unafraid