Michael John Randal MacKellar ( 27 October 1938 -- 9 May 2015 ) was an Australian politician and was the Liberal Member for Warringah from 1969 until 1994 .
Michael John Randal MacKellar AM ( 27 October 1938 -- 9 May 2015 ) was an Australian politician and agricultural scientist . He was the Liberal Member for Warringah from 25 October 1969 until 18 February 1994 .