Possible Clues:

• Relating to an ancient Greek city
• It said one wasn't allowed play hurling and soccer with chap from old city
• Subsequently graduate's assimilated Ancient Greek
• Old Greek graduate stuck within that time
• Old Egyptian fellow turned up collar after start of thunderstorm
• Witch's alphabet provides the embargo
• Ancient Greek city-dweller
• Old citizen ultimately content with abolition of explosive substance
• The censorship of the old country?