Percy Shelley had been living in Windsor when he first met Mary, and it
was to that region that they moved in 1817 to set up their household in
Marlow. There Mary Shelley wrote the
principal part of this novel. It is clear that in retrospect Windsor held
a special place in Mary Shelley's memories: it is the site, for instance,
in which she bases the early chapters of The Last Man (1826), with their idealized
portraits of herself and Percy Bysshe Shelley.