Tradition
St. Jerome
De Viris Illustribus (Illustrious Men)
Chapter 92
Triphylius, bishop of Ledra or Leucotheon, in Cyprus, was the most eloquent man of his age, and was distinguished during the reign of Constantius. I have read his Commentary on the Song of Songs. He is said to have written many other works, none of which have come to our hand.
Source: De Viris Illustribus (Illustrious Men) (New Advent)