Percy Florence Shelley Bysshe Shelley, his namesake, and his wife author Mary Shelley. His elder siblings, consisting of a premature girl who died at few weeks old and a brother and a sister who died in childhood left him as the only surviving child as his mother suffered a miscarriage in 1822. His parents lived in Italy for several years, until his father drowned off Livorno, whereupon his mother moved back to England with him. Mary Shelley never remarried; Percy Florence had no further siblings. He joined Harrow School in 1832, and went up to Trinity College, Cambridge in October 1837. Shelley inherited
Percy Bysshe Shelley Michell of Horsham. Through his maternal lineage, he was a cousin of Thomas Medwin—a childhood friend and Shelley's biographer. Percy was the eldest of six children. His younger siblings were: Shelley's uncle, brother to his mother Elizabeth Pilfold, was Captain John Pilfold, a famous Naval Commander who served under Admiral Nelson during the Battle of Trafalgar. Three children survived Shelley: Ianthe and Charles, his daughter and son by Harriet; and Percy Florence Shelley, his son by Mary. Charles, who suffered from tuberculosis, died in 1826 after being struck by lightning during a rainstorm. Percy Florence, who eventually inherited the baronetcy