Which preposition to use with porcellus

at Occurrences 1%

A far greater part had rather read Apuleius than Plato: Tully himself confesseth he could not understand Plato's Timaeus, and therefore cared less for it: but every schoolboy hath that famous testament of Grunnius Corocotta Porcellus at his fingers' ends.

Which preposition to use with  porcellus