Genethlius
Genethlius was a 3rd-century Arab sophist from Petra, Arabia Petraea. His father was also named Genethlius.
He was a pupil of the Greek sophists Minucianus and Agapetus, and then he himself became a teacher and practiced rhetoric in Athens. He has been known as a rival to the famous Callinicus of Petra.
Genethlius is also thought by some scholars to be the author of the first treatise in the corpus of Menander Rhetor.