Aeschylus was a Greek tragic poet, who lived from 525-456 BC. He is the oldest tragedian, whose work still survives. His is also the first of the three great Athenian tragedians (Sophocles and Euripides being the other two). Born in Athens, he fought in the Persian War at the battle of Marathon in 490 BC.
He is generally regarded as the founder of Greek tragedy. He wrote over eighty plays, seven of which survive today. Among his most notable plays are the Oresteia (Agamemnon, Choephoroe and Eumenides), Persians, Seven Against Thebes, and Prometheus Bound.
Oxford Concise Companion to Classical Literature. ed. Howatson and Chilvers. Oxford. New York, 1993.