Adelia was showing off with her Christmas card, but I believe there was more to it. Avilion was where King Arthur went to die. Surely Adelia’s choice of name signifies how hopelessly in exile she considered herself to be: she might be able to call into being by sheer force of will some shoddy facsimile of a happy isle, but it would never be the real thing. She wanted a salon; she wanted artistic people, poets and composers and scientific thinkers and the like, as she had seen while visiting her English third cousins, when her family still had money.