Amanda Feilding, Countess of Wemyss and March, also known as Lady Neidpath, sits cross-legged on a bench on a tiny island at the center of an artificial pond in her English country estate, a 15-minute drive outside of Oxford. At her feet is a tiny pure-white cloud of a dog, which traipses around chewing on the grass, only occasionally coughing it up. Feilding is 75 years old.