Oneiros

[1] In the Iliad of Homer, Zeus sends an Oneiros to appear to Agamemnon in a dream, while in Hesiod's Theogony, the Oneiroi are the sons of Nyx (Night), and brothers of Hypnos (Sleep).

In Homer's Iliad, Zeus decides to send a "baleful dream" to Agamemnon, the commander of the Greek army during the Trojan War.

[4] The Odyssey locates a "land of dreams" past the streams of Oceanus, close to Asphodel Meadows, where the spirits of the dead reside.

[6] Hesiod in his genealogical poem the Theogony, makes the "tribe of Dreams" (φῦλον Ὀνείρων), among the many offspring of Nyx (Night), without a father.

[8] The second-century AD geographer Pausanias mentions seeing statues of an Oneiros and Hypnos lulling a lion to sleep.