Sir Percy Florence Shelley, 3rd Baronet of Castle Goring (12 November 1819 5 December 1889) was the son and only surviving child of English Romantic poet Percy Bysshe Shelley and his second wife, Mary Wollstonecraft Shelley. He was thus the only grandchild of Mary Wollstonecraft or of William Godwin to live beyond infancy. His middle name, possibly suggested by his father's friend Sophia Stacey, came because he was born in Florence. He had two elder half-siblings, by his father's first marriage, to Harriet Westbrook.