'Duke of Northumberland', c 1890.
© NMeM / Royal Photographic Society / Science & Society Picture Library
Platinum print photograph by Frederick Hollyer (1837-1933) of Algernon, 6th Duke of Northumberland (died 1899). The Duke served in the Army and as a Member of Parliament in 1831-1832 and 1852-1865. He was Civil Lord of the Admiralty in 1858, Vice-President of the Board of Trade in 1859, and Lord Privy-Seal from 1878-1880.