Aion was a Roman deity, the partner of Tellus. He represented eternity, but is also equated with Uranus, the sky, while his partner, Tellus, is equated with Gaia, the earth. The two are depicted in a mosaic in the roman villa at Sentinum, the modern–day Sassoferrato.
Aion, also known as Æon, also refers to a minor Anatolian deity in classical times. Aion is identified with Dionysus in Christian and Neoplatonic writers, but there are no pre-Christian references to Dionysus as Aion.[1]
An alternate spelling of Aion is Aeon. In the latter spelling, it is often a gnostic term for a certain type of divine entity (of which there were multiple instances).