Which preposition to use with gatekeeper

of Occurrences 4%

"] [Footnote 21: Rizván is the gardener and gatekeeper of Paradise.]

with Occurrences 1%

The English factory girl who is urged to join her Union, the tired old Scotch gatekeeper with a few pounds to invest, the Galician peasant when the emigration agent calls, the artisan in a French provincial town whose industry is threatened by a new invention, all know that unless they find their way among world-wide facts, which only reach them through misleading words, they will be crushed."

Which preposition to use with  gatekeeper