Cavendish Square (W1) Named after Edward Harley, second Earl of Oxford and Mortimer, the founder of the Harleian Library, who died in 1741. Frances, Dowager Viscountess Nelson, widow of the great Nelson, died here in 1831, aged 68. Barry Cornwall lived with his family at No. 13, Upper Harley Street. William Ewart Gladstone lived at No. 73. (Reference: Jesse's London, vol. I, pp. 43-5)