Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of
Spouse of the Prime Minister of Australia recent spouse of an Australian prime minister to die was Hazel Hawke (ex-wife of Bob Hawke), on 23 May 2013. A number of prime ministers have remarried after leaving office or had marriages that ended before taking office. Spouse of the Prime Minister of Australia The spouse of the Prime Minister of Australia is generally a high-profile individual, and assists the prime minister with his or her ceremonial duties as well as performing various other functions. The wife of the current prime minister is Jenny Morrison. With a few exceptions, the prime minister's spouse has been a public figure and