In Greek mythology, Eteocles was a king of Thebes, the son of Oedipus and either Jocasta or Euryganeia. Oedipus killed his father Laius and married his mother without knowing his relationship to either. When the relationship was revealed, he was expelled from Thebes. The rule passed to his sons Eteocles and Polynices. However, because of a curse from their father, the two brothers did not share the rule peacefully and died as a result, ultimately killing each other in battle for control of the city. Upon his death, Eteocles was succeeded by his uncle, Creon.

Sophocles was an ancient Greek tragedian, known as one of three from whom at least one play has survived in full. His first plays were written later than, or contemporary with, those of Aeschylus; and earlier than, or contemporary with, those of Euripides. Sophocles wrote over 120 plays, but only seven have survived in a complete form: Ajax, Antigone, Women of Trachis, Oedipus Rex, Electra, Philoctetes, and Oedipus at Colonus. For almost fifty years, Sophocles was the most celebrated playwright in the dramatic competitions of the city-state of Athens which took place during the religious festivals of the Lenaea and the Dionysia. He competed in thirty competitions, won twenty-four, and was never judged lower than second place. Aeschylus won thirteen competitions, and was sometimes defeated by Sophocles; Euripides won four.