Robert Arthur Talbot Gascoyne-Cecil, 3rd Marquess of Salisbury, KG, GCVO, PC, FRS, styled Lord Robert Cecil before 1865 and Viscount Cranborne from June 1865 until April 1868, was a British Conservative statesman, serving as Prime Minister three times for a total of over 13 years.
He was the last Prime Minister to head his full administration from the House of Lords.
Robert Gascoyne-Cecil 3rd Marquess of Salisbury served as Prime Minister between 1885 to 1886, 1886 to 1892 and 1895 to 1902
1871 Census of England & Wales (RG10/1374 f89 p28), Hatfield House, Hatfield, Hertfordshire, Robert Cecil, age 41. Peer, Chancellor of University, Chairman of Quarter Sessions, Landowner. Accessed at Findmypast (http://www.findmypast.com)
1881 Census of England & Wales (RG11/1426 f82 p20), Hatfield House, Bishops Hatfield, Hatfield, Hertfordshire, Marquis of Salisbury, age 51. Accessed at Findmypast (http://www.findmypast.com)