Possible Clues:

• Mysterious sort of coteries
• Where Jocasta was queen
• North-west of Athens, a city in ancient Greece
• Ancient city whose ruins are in modern Luxor
• The most appropriate time to leave ancient city
• Where Oedipus was king
• Old city the one above all others? Not quite
• In it he besieged ancient Greek city
• In fact, he besieged an ancient Greek city
• Time for youthful Greek goddess is endless on the Nile