Who are the famous people with phenylketonuria?

Once, a mother (Pearl Buck), and her 3 year old child went to China for a holiday. One day, Pearl rushed her child home saying: "What is the matter with my little girl? What is causing it? Is there any doctor, anywhere, who can cure her?" The doctors tested her but did not know what was wrong with her. They found that her brain was not developing, as her Mother explains in her book: The Child Who Never Grew. No one knows her real name apart the doctors, her mother and her friends and family. Her surname is Buck.