In Greek mythology, Menelaus was a Greek king of Mycenaean (pre-Dorian) Sparta. According to the Iliad, the Trojan war began as a result of Menelaus’s wife, Helen, fleeing to Troy with the Trojan prince Paris. The cuckolded Menelaus was a central figure in the Trojan War, leading the Spartan contingent of the Greek army, under his elder brother Agamemnon, king of Mycenae. Prominent in both the Iliad and Odyssey, Menelaus was also popular in Greek vase painting and Greek tragedy, the latter more as a hero of the Trojan War than as a member of the doomed House of Atreus.

In Greek mythology, Atreus was a king of Mycenae in the Peloponnese, the son of Pelops and Hippodamia, and the father of Agamemnon and Menelaus. Collectively, his descendants are known as Atreidai or Atreidae.