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
Shelley Scarlett, 5th Baron Abinger Shelley Scarlett, 5th Baron Abinger Commander Shelley Leopold Laurence Scarlett, 5th Baron Abinger (1 April 1872 – 23 May 1917), was a British peer. Scarlett was the son of Lieutenant-Colonel Leopold James Yorke Campbell Scarlett, and a great-grandson of the 1st Baron Abinger. His mother had been adopted by Percy Florence Shelley, son of Mary and Percy Bysshe Shelley. He succeeded his second cousin in 1903. In 1904, a Royal Warrant of Precedence was issued, which allowed Scarlett's siblings (Robert, Hugh, Ruth, Percy, and Leopold) to be styled "The Honourable". Scarlett was a Commander in the Royal Naval Volunteer Reserve.