Euphronios (yōōfrō´nēəs), c.520–470 BC, Greek potter and painter. He spent his early career as a painter, working mainly in the red-figure style. In his later years, he was known primarily as a potter. The vessels attributed to him as a painter include a vase depicting the struggle of Heracles with Antaeus (c.510–500 BC) and a kylix depicting a horseman within it and Heracles' battle with the mythical Gorgon outside it.
"Euphronios." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (September 25, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/euphronios
"Euphronios." The Columbia Encyclopedia, 6th ed.. . Retrieved September 25, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/euphronios