Creophylus (Ancient Greek: Κρεώφυλος ὁ Σάμιος, Kreophylos ho Samios) is the name of a legendary early Greek epic poet, native to Samos or Chios.
He was said to have been a contemporary of Homer and author of the lost epic Capture of Oechalia.
So we have two examples of descendants of Creophylus teaching outsiders (non-Homeridae) the Epic tradition.
It seems that the restrictions on the Homeridae in regards to teaching may have not been applicable to the descendants of Creophylus, Homer's host and friend.
He is mentioned disparagingly in Book X (600b-c) of the Republic, in which the reasons for banishing some forms of poetry and 'imitative art' from his ideal city are outlined, with Plato alluding to his name meaning 'meathead'.