Pomponius Porphyrion

Pomponius Porphyrion (or Porphyrio) was a Latin grammarian and commentator on Horace, possibly a native of Africa, who flourished during the 2nd or 3rd century.

His scholia on Horace, which are still extant, mainly consist of rhetorical and grammatical explanations. We probably do not possess the original work, which must have suffered from alterations and interpolations at the hands of the copyists of the Middle Ages, but on the whole the scholia form a valuable aid to the student of Horace.