Which preposition to use with secundus

to Occurrences 1%

I do not much esteem thy censure, take thy course, it is not as thou wilt, nor as I will, but when we have both done, that of [120]Plinius Secundus to Trajan will prove true, "Every man's witty labour takes not, except the matter, subject, occasion, and some commending favourite happen to it."

Which preposition to use with  secundus