Aeschylus was an Ancient Greek playwright and tragedian (c. 525 BC - c. 456 BC). Aeschylus is generally considered the father of tragedy.
The pronunciation of Aeschylus found here is of the anglicized version of his name and not of the original name in Ancient Greek.
Phonetically, the correct way to pronounce Aeschylus in British English is transcribed as
ee-skill-ous. This differs from the American version of pronouncing it found here:
Aeschylus (US).