William Stewart (biologist)
Sir William Duncan Paterson Stewart( born 6 June 1935) was President of the Royal Society of Edinburgh from 1999 – 2002 and Chairman of the Microbiological Research Authority.
William Duncan Smith (politician)
William Duncan Smith( January 4, 1899 – April 1, 1977) was a Canadian politician.
He served in the Legislative Assembly of British Columbia from 1945 to 1949 from the electoral district of Atlin, a member of the Coalition government.
Sir William Duncan, 1st Baronet
Sir William Duncan, 1st Baronet( died 1774) was a Scottish physician.
He was a fashionable society doctor in London, and physician in ordinary to George III of Great Britain.
Jim Duncan (baseball)
James William Duncan( July 1, 1871 – October 16, 1901) was a Major League Baseball player.
William Duncan Wylie
William Duncan McKay Wylie (1 April 1900 –
21 December 1981) was a farmer, public servant and Canadian federal politician.
Wylie first ran for a seat in the House of Commons of Canada as a Social Credit Party candidate in the 1945 federal election.
He defeated 3 other candidates by a comfortable margin to win the electoral district of Medicine Hat and his 1st term in office.
Wylie would run for re-election in the 1949 federal election, he would be re-elected in a landslide winning the largest plurality of his career.
Wylie would attempt to run for a 3rd term and be re-elected in the 1953 federal election.
He would be nearly defeated by Liberal candidate Harry Veiner.
Wylie served out his last term and retired in 1957.
Wylie died in Edmonton in 1981.
William Duncan Herridge
William Duncan Herridge, (September 18, 1887 – September 21, 1961) was a Canadian politician and diplomat.
Whitney Duncan MacMillan
William Duncan MacMillan (July 5, 1930 - October 31, 2006) was an American businessman, a director of Cargill.
William D. Connor
William Duncan Connor( March 24, 1864 – November 20, 1944) was a Canadian- born American politician and the 20th Lieutenant Governor of Wisconsin from 1907 – 1909.
Robert Haigh
Robert Haigh( born 27 March 1945 in Adelaide, South Australia) is a former hockey player from Australia, who won two Olympic silver medals as a member of the national team at the 1968 Summer Olympics in Mexico City and the 1976 Summer Olympics in Montreal, Canada.
He also competed at the 1972 Summer Olympics in Munich, where the Australian team finished fifth.
Since retiring as a player he has worked closely with the Australian men's and women's national programs.
He was an assistant coach to Ric Charlesworth with the Australian women's team, the Hockeyroos, and in 2010 was a selector for the men's national team, the Kookaburras.
He was inducted into the Australian Hockey Hall of Fame in 2008 and South Australian Sport Hall of Fame in 2011.
John William Duncan
John William Duncan( 1885- 1963) was a Welsh international field hockey player.

Question: Do William Duncan Wylie and Robert Haigh share the same nationality?
Answer: no