Aregon

Aregon (Ἀρήγων) was a painter from Corinth in ancient Greece, who, in conjunction with a "Cleanthes", ornamented the temple of Artemis Alpheionia at the mouth of the Alpheius river in Elis.

Aregon is known to have painted Artemis riding on a griffin.

If Cleanthes was the same artist who was mentioned by Pliny the Elder, Aregon must be placed at the very earliest period of the rise of art in Greece.