Oneiroi

In Greek mythology, dreams were sometimes personified as Oneiros or Oneiroi. 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). Oneiros was also, according to some myths, the name of one of the sons of Achilles with Deidamia. Sources For the ancient Greeks, dreams were not generally personified. However, a few instances of the personification of dreams, some perhaps solely poetic, can be found in ancient Greek sources. In Homer's Iliad, Zeus decides to send a "baleful dream" to Agamemnon, the commander of the Greek army during the Trojan War. An Oneiros is summoned by Zeus, and ordered to go to the camp of the Greeks at Troy and deliver a message from Zeus urging him to battle. The Oneiros goes quickly to Agamemnon's tent, and finding him asleep, stands above Agamemnon's head; taking the shape of Nestor, a trusted counselor to Agamemnon, the Oneiros speaks to Agamemnon, as Zeus had instructed him.