Possible Clues:

• Man perhaps goes after something precious in this place
• Poetic name for Ireland
• The speaker, taken in by Lear, is led astray? Limerick's part of it
• Name for Ireland
• Ireland, poetically
• Poet's green and pleasant land?
• What makes Ireland seem exotic, with latitude for name?
• Haggard country singer touring supermarkets after Europe and Ireland
• All remedies developed in Clare's country