Ancient Greek literature
Seven works of Sophocles have survived, the most acclaimed of which are the three Theban plays, which center around the story of Oedipus and his offspring. The Theban Trilogy consists of "Oedipus the King", "Oedipus at Colonus", and "Antigone". Although the plays are often called a "trilogy," they were actually written many years apart. "Antigone", the last of the three plays sequentially, was actually first to be written, having been composed in 441 BC, towards the beginning of Sophocles's career. "Oedipus the King", the most famous of the three, was written around 429 BC at the midpoint of Sophocles's career. "Oedipus at Colonus", the second of the three plays chronologically, was actually Sophocles's last play and was performed in 401 BC, after Sophocles's death.
Eupolis
Cyril of Alexandria placed the debut of Eupolis at some point between 428 and 424 BC, placing the debuts of Aristophanes and Plato the comic poet within the same period. George Syncellus gives the same dates, but merely states that Eupolis and Aristophanes were becoming prominent, not when they debuted. Syncellus extends the phrase to include Sophocles. Sophocles had actually become the pre-eminent playwright in Athens c. 456 BC, when Aeschylus died.