1830) 27 June – Harriet Martineau, philosopher and social theorist (born 1802) 14 July - Thomas Hazlehurst, chemical manufacturer and Methodist chapel builder (born 1816) 17 July – Francis Conyngham, 2nd Marquess Conyngham, soldier, courtier and politician (born 1797) 19 August – George Smith, Assyriologist (born 1840) 24 August – John Roberton, Scottish physician and social reformer (born 1797) 16 September – Hedworth Lambton, politician (born 1797) 18 October – Sir Thomas Dickson Archibald, judge (born 1817 in Nova Scotia) 29 December – Sir Titus Salt, woollen manufacturer and philanthropist (born 1803) References Years of the 19th century in the United Kingdom