Spencer Compton Cavendish, marquess of Hartington and 8th duke of Devonshire (1833–1908)

Politician. MA, Cambridge, 1854. Liberal MP for North Lancashire, 1857–68. Marquess of Hartington, 1858–91. Chief secretary for Ireland, 1870–4. Liberal leader in the Commons, 1875–80. Secretary of state for India, 1880. Secretary of state for war, 1882. Succeeded to the dukedom in 1891. Knighted, 1892. FRS 1892.