Which preposition to use with gaolers

of Occurrences 5%

It is mentioned, as an instance of fidelity, that a negress is the gaoler of the women in Tangier.

at Occurrences 1%

He was to all intents and purposes in custody, and he examined his gaoler at first wrathfully, then curiously, struck with his rather strange figure and appearance.

in Occurrences 1%

Instead, however, of apologizing for having treated me in such a way, they laughed at me; and when I came out into the court, every one pointed at me with their fingers, and joined my gaolers in their laughter.

with Occurrences 1%

The prisoners here cannot be so desirous of escaping as those in Europe, for I saw numbers of them, very slightly ironed, wandering about in groups or alone, in the place itself and its vicinity, without having any gaolers with them.

Which preposition to use with  gaolers