Possibly as early as the second century AD, Virgil's works were seen as having magical properties and were used for divination. In what became known as the Sortes Vergilianae (Virgilian Lots), passages would be selected at random and interpreted to answer questions. In the 12th century, starting around Naples but eventually spreading widely throughout Europe, a tradition developed in which Virgil was regarded as a great magician. Legends about Virgil and his magical powers remained popular for over two hundred years, arguably becoming as prominent as his writings themselves. Virgil's legacy in medieval Wales was such that the Welsh version of his name, Fferyllt or Pheryllt, became a generic term for magic-worker, and survives in the modern Welsh word for pharmacist, fferyllydd.
How long did legends of Virgil's magical powers remain popular? (If the question is unanswerable, say "unanswerable")
over two hundred years