It's possible that somewhere in his diary Nicholas may have noted speaking with the Duchess of Marlborough, though I wouldn't bet my life on it, since he was introduced to and spoke with so many people. Consuelo, however, would certainly be worthy of comment . . . not just because she was an American, and wealthy, but also because of her wit, intelligence, and of course her distinctive looks: tall, slender, with a lovely, swanlike neck and beautiful dark hair and eyes.
If about 30 or so years ago a film or miniseries had been made of Consuelo's life, Audrey Hepburn would have been perfect casting for the title role.