Which preposition to use with corrupter

of Occurrences 20%

Voltaire kept company only with the aristocracy of Geneva; neither his liberality nor his wit secured him the good-will of the patriots placed out of the sphere of his influence; they only saw him a sham philosopher, without principles and solidity; a courtier, the slave of rank and fashion; the corrupter of their country, of which he made a jest.

Which preposition to use with  corrupter