No. 15 now forms part of the Orthopædic Hospital in Oxford Street.
No. 16 in 1845 was occupied by the Royal College of Chemistry, established in that year, and afterwards removed first to Oxford Street, and in 1835 to the School of Mines, Jermyn Street.
In No. 17 Mrs. Jordan is said to have lived under the protection of the Duke of Clarence, afterwards William IV. In 1864 it became the home of the Arts Club, established in that year for persons interested in art, literature, or science. The house contains a fine painted ceiling by Angelica Kaufmann, and some marble mantelpieces of Italian workmanship, but is soon to be demolished.
No. 18 is the Oriental Club, founded in 1824 by Sir John Malcolm for persons who have resided or travelled in the East. The present house, on the site of one occupied by Lord Le Despenser 1771-81, was built in 1827 by the Wyatts, and contains some good portraits of Lord Clive and other distinguished Anglo-Indians.
No. 20 is the offices of the Royal Medical, Pathological, and Clinical Societies, established 1867.
No. 21 was the site of Downshire House from 1793. It was before that date the property of the Earl of Hillsborough. Here, in 1835, lived Talleyrand, then French Ambassador; after him, Earl Grey. It has been rebuilt, and is now a bank, above which is the New County Club, located here in 1894.
No. 32 was the home of the Naval and Military Club from 1863-65.
At No. 23 lived Lord Palmerston, father of the Premier, in 1806, and the Duchess of Brunswick, daughter of Frederick, Prince of Wales, d. 1813.
Other inhabitants: the present No. 20, Field-Marshal Viscount Cobham, 1736-48; George Granville, Lord Lansdowne, d. 1735; Ambrose Phillips, poet, d. 1749. At the present No. 10: Admiral Lord Rodney, 1792-96; Admiral Lord Anson, 1762; "Single Speech" Hamilton, 1765; Percival Pott, surgeon, 1777-88; Thomas Campbell, poet; Sir James Clark, physician, 1841.
The streets round Hanover Square are mainly broad, well built, and lined with shops. Hanover Street and Princes Street were built about 1736. In the latter Sir John Malcolm died in 1833. Swallow Place and Passage recall Swallow Street, which was cleared away to make Regent Street in 1820.