Which preposition to use with courtesans

in Occurrences 6%

[z]; nay, some canonists went so far as to affirm, that the clergy were entitled to the tithe of the profits made by courtesans in the exercise of their profession [a].

of Occurrences 5%

He saw her again like the old courtesan of Horace, ....

at Occurrences 2%

Caligula gave 100,000 sesterces to his courtesan at first word, to buy her pins, and yet when he was solicited by the senate to bestow something to repair the decayed walls of Rome for the commonwealth's good, he would give but 6000 sesterces at most.

by Occurrences 2%

And then she saw an opportunity; and having conceived a plan in her mind, sent forward her daughter, a courtesan by trade and of smart sense.

from Occurrences 1%

Servant or mistress, girl or wife, lady or work-girl, young or old, courtesan from a drawing-room or the pavement, one takes her, has one's pleasure of her, and goes away.

Which preposition to use with  courtesans