PERSONS, PLACES, & EVENTS IN PLATO

Glaucon (born circa 445 B.C.) was a son of Ariston, was the philosopher Plato's older brother. He is primarily known as a major conversant with Socrates in the Republic, and the questioner during the Allegory of the Cave. He is also referenced briefly in the beginnings of two dialogues of Plato: Parmenides and the Symposium.