During which years did the father of Maurice Macmillan serve as Prime Minister of the United Kingdom?
Harold Macmillan Maurice Harold Macmillan, 1st Earl of Stockton, {'1': ", '2': ", '3': ", '4': "} (10 February 1894 – 29 December 1986) was a British statesman of the Conservative Party who served as Prime Minister of the United Kingdom from 1957 to 1963. Nicknamed "Supermac", he was known for his pragmatism, wit and unflappability.
Ronald Armstrong-Jones Major Ronald Owen Lloyd Armstrong-Jones MBE QC (18 May 1899 – 27 January 1966) was a British barrister and soldier and the father of Antony Armstrong-Jones, 1st Earl of Snowdon.