Percy Bysshe Shelley October. On 10December 1816 the body of Shelley's estranged wife Harriet was found in an advanced state of pregnancy, drowned in the Serpentine in Hyde Park, London. Shelley had made generous provision for Harriet and their children in his will and had paid her a monthly allowance as had her father. It is thought that Harriet, who had left her children with her sister Eliza and had been living alone under the name of Harriet Smith, mistakenly believed herself to have been abandoned by her new lover, 36-year-old Lieutenant Colonel Christopher Maxwell, who had been deployed abroad, after a landlady
Mary Shelley 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 "Adonaïs" with one page