'My name is Diamond. I used to be called Ellen-Jane Potts, but my dear friend Hetty says it doesn't matter a jot if you change your name.' Diamond wasn't always a star. Born to penniless parents who longed for a strong, healthy son, she was a dainty, delicate daughter - and a bitter disappointment. With an extraordinary gift for acrobatics, Diamond uses her talent to earn a few pennies, but brings shame on her family. When...