Allen Fairhall was born on 24 November 1909 in Morpeth, New South Wales, Australia. He was married to Monica Clelland Ballantyne. He died on 3 November 2006 in Newcastle, New South Wales, Australia.
Member of the Australian Parliament for Paterson (10 December 1949 - 29 September 1969), Minister for the Interior and Minister for Works (11 January 1956 - 10 December 1958), Minister for Supply (22 December 1961 - 26 January 1966), Minister for Defence (26 January 1966 - 12 November 1969).