Possible Clues:

• Socrates, for one
• Capital person then takes a man outside
• European citizen including part of UK in every article
• Inhabitant of Greek capital
• A and then one AN with grease, by the sound of it (8)
• Native of Greek capital
• Pericles, for one
• Greek has three articles about Northern Ireland
• Timon was one in a Neath scrum
• Plato, for one