Which preposition to use with boethius

of Occurrences 1%

The means by which they work are usually charms, images, as that in Hector Boethius of King Duffe; characters stamped of sundry metals, and at such and such constellations, knots, amulets, words, philters, &c., which generally make the parties affected, melancholy; as Monavius discourseth at large in an epistle of his to Acolsius, giving instance in a Bohemian baron that was so troubled by a philter taken.

on Occurrences 1%

Chaucer, who is generally considered as the father of our poetry, has left a version of Boethius on the Comforts of Philosophy, the book which seems to have been the favourite of the middle ages, which had been translated into Saxon by King Alfred, and illustrated with a copious comment ascribed to Aquinas.

Which preposition to use with  boethius