Possible Clues:

• Land's ground seemed to contain nitrogen
• Manor-house finally collapsed — son brought in workers in middle of week
• Manor's land
• Some Eden with love gone, abandoned territory
• Estate needs me to move
• Seed men (anag) — land attached to a property and retained for the owner's personal use
• Land attached to a manor
• Valley outside the borders of my French estate
• Put down, say, and land for one's own benefit
• Estate seemed strangely to possess new interior