Mary Shelley came from a family of intellectuals: Her parents were Mary Wollstonecraft, one of history's first feminist writers, and William Godwin, a philosopher.
Mary Shelley by Richard Rothwell, 1840.Wikimedia Commons
Because of her parents' prominence, the young Shelley was able to develop her growing intellect in the company of visiting intellectuals and luminaries like U.S. Vice President Aaron Burr (left) and famed Romantic poet Samuel Taylor Coleridge (right).Wikimedia Commons
Shelley's romances led her father to disown her. When she was just 16, Shelley met the poet Percy Bysshe Shelley — an admirer of her father's. Even though he was married and significantly older (age 22 at the time), the two fell in love and eventually ran away together in 1814. When they returned to England, Mary was pregnant and her father wanted nothing to do with her.
Percy Bysshe Shelley by Alfred Clint, 1819.Wikimedia Commons
Mary's father may have killed to save his daughter's reputation. In 1816, the pregnant body of Harriet Westbrook, Percy Shelley's first wife, was found in London's Serpentine river after an apparent suicide. Mary and Percy got married soon after, but rumors persisted that Mary's father had Harriet killed, as she stood in the way of his own daughter marrying Percy and thus forging a "legitimate" relationship.
William Godwin by James Northcote, 1802.Wikimedia Commons
A penchant for poets may have run in the family. Like Mary, Shelley's stepsister Claire Clairmont wanted a poet lover for herself, so she pursued Percy's friend, Lord Byron. It was in pursuit of him that she, Mary, and Percy traveled to Geneva, Switzerland to meet Byron, and where in 1816 Mary would begin writing Frankenstein.
Claire Clairmont by Amelia Curran, 1819.Wikimedia Commons
Lord Byron may have inspired Shelley to write her most famous work. As the legend goes, Byron, Mary, Percy, and Byron's personal physician, Dr. John William Polidori, stayed up late one night, discussing the occult and reading ghost stories. Byron challenged the group to write a horror story, which led Mary to produce the story that would become Frankenstein. She wasn't the only one whose story would go down in history: Polidori wrote "The Vampyre," widely considered the inspiration for Bram Stoker's Dracula.
George Lord Byron by Richard Westall, 1813.Wikimedia Commons
Shelley, however, says that Frankenstein came to her as she slept. In the third edition of Frankenstein, Mary explains that a dream inspired the story. "I saw with shut eyes, but acute mental vision – I saw the pale student of unhallowed arts kneeling beside the thing he had put together," the author writes. "I saw the hideous phantasm of a man stretched out, and then, on the working of some powerful engine, show signs of life…"
An illustration from Frankenstein entitled "Frankenstein at work in his laboratory."Wikimedia Commons
Despite popular assumptions, it is the mad doctor, not the monster that is named Frankenstein. The monster is only ever referred to as "wretch," "creature," "monster," "demon," and "it."Insomnia Cured Here/Flickr
Mary may have taken further inspiration from Frankenstein Castle (above) in Darmstadt, Germany. The alchemist Johann Conrad Dippel lived there in the 17th and 18th centuries. Local legends have it that he experimented on a human body he exhumed while living in the castle. Wikimedia Commons
When Mary started writing Frankenstein, she was just 19. By the time of the book's 1818 publishing, she was only 21.
An original, handwritten page from the draft of Frankenstein written in the summer of 1816.Wikimedia Commons
While Frankenstein was initially published anonymously, a preface by Percy Shelley led many to believe he had written the novel. It wasn't until after the story became popular on the stage — in 1823, five years after its initial release — that Mary published the book under her own name.
A first edition of Frankenstein.Wikimedia Commons
Although it is now regarded as a classic, many of the original reviews of Frankenstein were not positive at all. The Quarterly Review, for one, called it "a tissue of horrible and disgusting absurdity."
Frankenstein castle as illustrated in an 1852 edition.Wikimedia Commons
The Frankenstein we know is not the one Shelley originally created. Indeed, the author revised her book many times, most notably in 1831. Written after the tragic deaths of two of her children and Percy, this version presents Doctor Frankenstein as less of a man of free will and more as a pawn of fate, which is how Mary saw herself in the wake of her tragedies.
Illustration from the revised edition of Frankenstein.Wikimedia Commons
Although she is often remembered solely for Frankenstein, Shelley was able, in her short life, to publish a large amount of work across a wide area of forms and subject. Her oeuvre includes seven novels, three children's books, over a dozen short stories and poems each, several volumes of biographies, and a smattering of articles and poems.
The original manuscript of Frankenstein.Matt Cardy/Getty Images
Tragedy marked much of Shelley's life. Only one of her three children, Percy Florence Shelley, survived into adulthood. The others — like William, who died of malaria before his first birthday — perished before Mary even got a chance to know them.
William Shelley by Amelia Curran, 1819Wikimedia Commons
Though Frankenstein is Shelley's most famous work, she continued to write for the rest of her life: Her other works include more science fiction, like the apocalyptic novel The Last Man, about the only survivor of a global plague, and the historical novel Valperga. She also edited posthumous editions of her husband's poetry. Wikimedia Commons
Just like his first wife, Shelley's husband Percy drowned, though his death was an accident. While sailing his boat, the Don Juan, Percy got caught in a storm. His body was found ten days later, a copy of Keats' poems in his pocket.
Percy was cremated, but his calcified heart refused to burn. Shelley kept it, along with other items of the deceased, with her for many years. When Shelley's son emptied his mother's desk after her death in 1851, he found locks of her dead children's hair, and the remains of Percy's heart wrapped up in one of his poems. It was buried in the family vault after their son's death in 1889.
Mary Shelley's grave in Bournemouth, England.Wikimedia Commons