John William Polidori (1795-1821) was, for a brief period, the personal physician to Lord Byron. William Michael Rossetti, his nephew, published this manuscript diary in 1911. It is the only contemporary account of the few weeks, crucial to the development of Romanticism, during which Mary Shelley wrote Frankenstein.
This diary by Byron's doctor, published in 1911, is the only contemporary account of the creation of Mary Shelley's Frankenstein.