Aeschylus was the earliest of the three great tragedians of classical Athens, often called the father of tragedy, best known for the Oresteia, the only surviving complete trilogy of ancient Greek drama.
Aeschylus (c. 525–456 BCE) fought at the Battle of Marathon before becoming the first of the great Athenian tragedians. He is credited with expanding the form of tragedy, notably by adding a second actor, which made genuine dramatic dialogue and conflict possible.
Of his roughly ninety plays, only seven survive, including Prometheus Bound, The Persians, and his masterpiece, the Oresteia — the trilogy of Agamemnon, The Libation Bearers, and The Eumenides, which traces the cycle of vengeance and the birth of justice in the house of Atreus.
Aeschylus laid the foundations of Western drama, and his grand, solemn vision of fate, guilt, and divine justice continues to be staged and studied more than two millennia later.