Donald Alfred Mountjoy was an Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

n politician. Born in Middle Swan, Western Australia

Middle Swan, Western Australia

Middle Swan is a rural suburb of Perth, Western Australia in the Swan Valley, and forms part of the City of Swan local government area. The suburb is bisected by the Swan River...

, he was educated at state schools before becoming a labourer and railwayman, as well as an official with the Australian Railways Union. In 1943, he was elected to the Australian House of Representatives

Australian House of Representatives

The House of Representatives is one of the two houses of the Parliament of Australia; it is the lower house; the upper house is the Senate. Members of Parliament serve for terms of approximately three years....

 as the Labor

Australian Labor Party

The Australian Labor Party is an Australian political party. It has been the governing party of the Commonwealth of Australia since the 2007 federal election. Julia Gillard is the party's federal parliamentary leader and Prime Minister of Australia...

 member for Swan

Division of Swan

The Division of Swan is an Australian Electoral Division located in Western Australia. The division is named after the Swan River.For several decades, it has been a marginal seat, extending along the Swan and Canning Rivers from the affluent suburbs in the City of South Perth to the west, which...

, defeating sitting member Thomas Marwick

Thomas Marwick

Thomas William Marwick was an Australian politician.Born in York, Western Australia, he was educated at Catholic schools and at Perth Technical College before becoming an engineer. He farmed at Brookton and at York before entering politics. In 1936, he was appointed to the Australian Senate to...

. He was defeated by the Country Party

National Party of Australia

The National Party of Australia is an Australian political party.Traditionally representing graziers, farmers and rural voters generally, it began as the The Country Party, but adopted the name The National Country Party in 1975, changed to The National Party of Australia in 1982. The party is...

's Leonard Hamilton

Leonard Hamilton (Australian politician)

Leonard William Hamilton was an Australian politician. Born in Jarrahdale, Western Australia, he was educated at Perth Boys School before becoming a wheat and sugar farmer. He served in the military from 1917-1920 and from 1940-1945...

 in 1946, but later that year was appointed executive member of the CSIRO, where he remained until 1949. Mountjoy died in 1988.