William McMahon
Sir William "Billy" McMahon, GCMG, CH (23 February 1908 – 31 March 1988), was an Australian politician who was the Leader of the Liberal Party and the 20th Prime Minister of Australia from 10 March 1971 to 5 December 1972. McMahon was a member of the Australian House of Representatives for the seat of Lowe from his election in 1949 until his resignation in 1982. He rose to power at a bad time for the Coalition after over two decades in power, and he led his government to a loss to the Labor Party led by Gough Whitlam. He was the longest continuously serving government minister in Australian history - serving 21 years and 6 months - and held the longest tenure as Prime Minister without leading his party to victory at an election, being Prime Minister for 1 year and 270 days.
McMahon was born in Sydney, Australia, to an Australian mother and an Irish-Australian father, and was one of four children. When his mother died in 1917, when he was 9, McMahon was brought up by relatives and guardians, the most prominent among them his maternal uncle, who became Lord Mayor of Sydney in 1932. McMahon's father died when he was 18. McMahon was educated at Abbotsholme College, Killara, and at Sydney Grammar School and attended the University of Sydney, where he graduated with a Bachelor of Laws and returned to study economics, a factor that made him an apt Treasurer, but was a factor in the downfall of his premiership. While at university, McMahon competed in boxing and took interest in theatre, music and art.