An English writer and critic, William Michael Rossetti (1829-1919) was the brother of Dante Gabriel and Christina Rossetti, and an original member of the Pre-Raphaelite Brotherhood. He edited, with invaluable explanatory notes, the diaries of his maternal uncle John William Polidori-the fascinating account of the few weeks, in 1816, which were essential to the development of the Romantic Movement, during which Polidori's "The Vampyre: A Tale"-the first vampire novel published in English-and Mary Shelley's "Frankenstein" arose from a storytelling competition at the Villa Diodati, in Switzerland...