Claim: Writer and journalist Frances Parthenope Verney was the oldest daughter of William Nightengale and Frances Smith.
Evidence: Frances Parthenope Verney, Lady Verney (née Nightingale; 19 April 1819 - 12 May 1890), was an English writer and journalist. She was the oldest daughter and child of William Nightingale and his wife, Frances Smith. 
Writer, journalist They had two daughters, both born while the family was on the Grand Tour of what would later become Italy. The elder, Parthenope Nightingale, was born in Naples and named after the city's Greek title. In 1818, when he was 23 and she was 29, he married Frances "Fanny" Smith (1789–1880), from Parndon in Essex, daughter of the Whig M.P. Frances Parthenope Nightingale
(1819-04-19)19 April 1819
Naples, Italy