Which preposition to use with priscian

as Occurrences 1%

This prefatory matter is written in a style of considerable obscurity, which the author defends by the example of the ancients, and quotes Priscian as her authority.

for Occurrences 1%

He thinks no language worth knowing but his Barragouin: only for that point he hath been a long time at wars with Priscian for a northern province.

Which preposition to use with  priscian