When people hear the name "Clooney," they automatically think of George Clooney, one of Hollywood's biggest stars. But it was his aunt Rosemary who first catapulted the name into bright lights with a string of hit songs in the 1950s and a starring role alongside Bing Crosby in the immortal "White Christmas." Drawing on interviews with family members, managers, promoters, and the jazz musicians who worked with her, as well as contemporary newspaper...