In Greek and Roman mythology, Oeax or Oiax (Ancient Greek: Οἴακα or Οἴαξ means "handle of rudder, tiller") was a Euboean prince as the son of King Nauplius.[1]
Oeax's mother has been variously named as Clymene,[2] Hesione[3] or Philyra.[4] He was also the brother of Nausimedon and Palamedes, a Greek warrior at the Trojan War.
Because Oeax was angry at the Greeks for killing Palamedes at Troy, he falsely told Clytemnestra about Agamemnon bringing back Cassandra, a Trojan concubine, which led to Clytemnestra plotting to kill Agamemnon.[5] Later, Oeax tried to banish Orestes after the latter murdered his mother Clytemnestra.[6] Ultimately, Oeax and his brother Nausimedon were killed by Pylades after helping Aegisthus in his fight with Orestes.[7]