Mary Wollstonecraft Shelley (nee Godwin; 30 August 1797 - 1 February 1851) was an English novelist, short story writer, dramatist, essayist, biographer, and travel writer, best known for her Gothic novel Frankenstein: or, The Modern Prometheus (1818). She also edited and promoted the works of her husband, the Romantic poet and philosopher Percy Bysshe Shelley. Her father was the political philosopher William Godwin, and her mother was the philosopher and feminist Mary Wollstonecraft.
In 1840 and 1842, mother and son travelled together on the continent, journeys that Mary Shelley recorded in Rambles in Germany and Italy in 1840, 1842 and 1843 (1844). In 1844, Sir Timothy Shelley finally died at the age of ninety, "falling from the stalk like an overblown flower", as Mary put it. For the first time, she and her son were financially independent, though the estate proved less valuable than they had hoped. In the mid-1840s, Mary Shelley found herself the target of three separate blackmailers. In 1845, an Italian political exile called Gatteschi, whom she had met in Paris, threatened to publish letters she had sent him. A friend of her son's bribed a police chief into seizing Gatteschi's papers, including the letters, which were then destroyed. Shortly afterwards, Mary Shelley bought some letters written by herself and Percy Bysshe Shelley from a man calling himself G. Byron and posing as the illegitimate son of the late Lord Byron. Also in 1845, Percy Bysshe Shelley's cousin Thomas Medwin approached her claiming to have written a damaging biography of Percy Shelley. He said he would suppress it in return for PS250, but Mary Shelley refused. In 1848, Percy Florence married Jane Gibson St John. The marriage proved a happy one, and Mary Shelley and Jane were fond of each other. Mary lived with her son and daughter-in-law at Field Place, Sussex, the Shelleys' ancestral home, and at Chester Square, London, and accompanied them on travels abroad. Mary Shelley's last years were blighted by illness. From 1839, she suffered from headaches and bouts of paralysis in parts of her body, which sometimes prevented her from reading and writing. On 1 February 1851, at Chester Square, she died at the age of fifty-three from what her physician suspected was a brain tumour. According to Jane Shelley, Mary Shelley had asked to be buried with her mother and father; but Percy and Jane, judging the graveyard at St Pancras to be "dreadful", chose to bury her instead at St Peter's Church, Bournemouth, near their new home at Boscombe. On the first anniversary of Mary Shelley's death, the Shelleys opened her box-desk. Inside they found locks of her dead children's hair, a notebook she had shared with Percy Bysshe Shelley, and a copy of his poem Adonais with one page folded round a silk parcel containing some of his ashes and the remains of his heart.

Q: What year did Mary die?
A: 1851,

Q: Was Mary married?
A: unknown

Q: How did Mary die?
A: her physician suspected was a brain tumour.
Where did Mary die?
Chester Square, Chester Square, at Chester Square, Chester Square,
Chester Square,