1911 Encyclopædia Britannica/Acro, Helenius
ACRO (or Acron), HELENIUS, Roman grammarian and commentator, probably flourished at the end of the 2nd century a.d. He wrote commentaries on Terence and perhaps Persius. A collection of scholia on Horace, originally anonymous in the earlier MSS., and on the whole not of great value, was wrongly attributed to him at a much later date, probably during the 15th century. It has been published by Pauly (1861) and Hauthal (1866), together with the other Horace scholia.