The Right Honourable Sir Patrick Duncan, GCMG, PC was the sixth Governor-General of the Union of South Africa, holding office from 1937 to 1943.
Born in Scotland in 1870, he took degrees in classics at the University of Edinburgh and at Balliol College, Oxford, and studied law in the Inner Temple, before joining the British civil service.
In 1901, during the Anglo-Boer War, he was recruited by Viscount Milner, to join a team of young administrators - known as "Milner's Kindergarten" - to govern and anglicise the British-occupied Transvaal. He was Colonial Secretary of the Transvaal from 1903 until the colony was granted self-government in 1907, playing an important part in the repatriation of ex-prisoners of war, and in the social and financial reconstruction of the former Boer state.
Duncan practised as an attorney from 1907 to 1910, and was a legal adviser to the Transvaal delegation to the 1908-1909 National Convention that drew up the constitution for the Union of South Africa.
He was a member of the Union Parliament from 1910 to 1936, first as a member of the Unionist Party, then of the South African Party and its successor the United Party. He was Minister of Education, the Interior, and Public Health in the SAP administration from 1921 to 1924, and Minister of Mines in the UP administration from 1933 to 1936.