Since the initial publication of Mary Wollstonecraft Shelley's novel Frankenstein; or, The Modern Prometheus in 1818, there has existed uncertainty about the extent to which Mary Shelley's husband, Percy Bysshe Shelley, contributed to the text. While the novel was conceived and mainly written by Mary, Percy is known to have provided input in editing and publishing the manuscript. Some critics have alleged that Percy had a greater role—even the majority role—in the creation of the novel, though mainstream scholars have generally dismissed these claims as exaggerated or unsubstantiated. Based on a transcription of the original manuscript, it is currently believed that Percy contributed between 4,000 and 5,000 words to the 72,000 word novel.
