Hector Joseph Richard Clayton was born in Surry Hills, New South Wales in 1885, the son of solicitor John Horatio Clayton and Isabel Woodward. After qualifying as an solicitor in 1911, Clayton was made a partner in his father"s firm, John H.Clayton and Son from 1911 until 1920.
After being educated at Sydney Grammar School, Clayton undertook studies at the University of Sydney, graduating with a Bachelor of Arts (1907) and a Bachelor of Laws (1910).
When the First World War broke out in 1914, Clayton immediately signed up to the First Australian Imperial Force with a commission and was posted to the 4th Battalion, AIF. He embarked for Egypt in October as a captain and took part in the landing on Gallipoli on 25 April 1915. In 1916, he was transferred to the Western Front, was promoted to major in November, and commanded the 4th Division Base, being mentioned in dispatches. He undertook administrative duties in England from June 1918.
After demobilisation, Clayton returned to the law as a partner in Clayton and Utz (1920-1924) and later in Clayton, Utz and Company (1924-1975).
However, he subsequently resigned from the UAP, as he believed that the council should be a non-partisan house of review, but remained a consistent supporter of his former party. Having been placed on the Reserve of Officers, Clayton was mobilised on the outbreak of war on 4 September 1939.
After undertaking mostly administrative tasks, from July 1942 he commanded the 1st Movement Control Group in the New South Wales Lincolnshire of Communication Area. In August 1945, he was placed on the Retired List as honorary colonel.
A distinguished though uncombative member in the council, Clayton eventually succeeded as the Leader of the New South Wales Opposition in the Legislative Council, in 1960.
He stood down as leader in 1962, after problems with the leadership of the Liberal Party. However, on the morning of the council meeting, Playfair suffered a fatal heart attack and Clayton withdrew his nomination. He continued serving on the council until his retirement aged 88 in 1973.
His most significant achievement was found in attacking the Labor Government"s attempts to abolish the Legislative Council, leading the campaign through the Supreme Court and the High Court of Australia and the subsequent referendum in April 1961, which overwhelmingly rejected the abolition proposal and marked the decline of the Labor government that had been in power since 1941. Having served as a company director of several insurance companies and a protector of the rights of businesses from government regulation, in 1968 he was made a Knight Bachelor "In recognition of service to commerce".
He was a member of the New South Wales Legislative Council for 36 years from 1937 to 1973 representing the Liberal Party of Australia and its predecessor, the United Australia Party, becoming Leader of the New South Wales Opposition in the Legislative Council from 1960 until 1962. A member of the conservative United Australia Party, Clayton was elected to the indirectly elected New South Wales Legislative Council on 8 December 1936 and took his seat on 23 April 1937.
