The daughter of a millionaire stockbroker, Jennie Jerome was beautiful, daring and unconventional, ‘more panther than woman’ according to one contemporary. Drawing on family papers, newly discovered archives and interviews with her granddaughters, this biography recounts Jennie’s New York childhood, her time in Paris, her three marriages – including 20 turbulent years with Randolph Churchill – and her many lovers. It assesses her political influence, her position within the Marlborough dynasty, and the qualities she passed on to her devoted son.