Possible Clues:

• The whole of creation.
• Everywhere it's riven in use
• 13's one quatrain, perhaps, means everything
• A French one and one that's poetic, and that's everywhere
• One short extract from poem, that's all
• Everywhere you may find the poetry of Ulster
• You Poetry of Ulster that's everywhere
• That's all there is
• It's all there is
• Unpopular leader backing popular lines, mind-boggling concept