Harold Wilson Years in office: 1964-1970 and 1974-1976 Born: 11 March 1916 Nickname: None Title: The Lord Wilson of Rievaulx Age assumed office: 48 years 219 days Total time in office: 7 years 279 days Harold Wilson - Wikipedia, the free encyclopedia James Harold Wilson, Baron Wilson of Rievaulx, KG, OBE, FRS, PC (11 March 1916 – 24 May 1995) was a British Labour Member of Parliament, Leader of the Labour Party and twice Prime ... en.wikipedia.org/wiki/Harold_WilsonHarold Wilson | Number10.gov.uk Born: 11 March 1916 in Cowlersley, Huddersfield, Yorkshire First entered Parliament: 5 July 1945 Age he became PM: 48 years, 219 days; 57 years, 358 www.number10.gov.uk/history-and-tour/prime-ministers-in-history/harold-wilsonHarold Wilson: Biography from Answers.com (James) Harold Wilson, Baron Wilson (of Rievaulx) (born March 11, 1916, Huddersfield, Yorkshire, Eng www.answers.com/topic/harold-wilson