The duchess lived in quiet exile in the posh sixteenth arrondissement in Paris and did not seem too busy, even at short notice, to receive a young American couple dimly connected to her much livelier brother in Michigan. Lunch was decorous and restrained. Served by a maid in a black-and-lace uniform I would never see again except in pornographic videos, the food arrived on faded Italian china the old lady must have brought with her as a young bride from Florence. It began w