About Duncan James Sinclair
Lived 1867 – 1943 (aged 76). Duncan James Sinclair was a Canadian politician and physician.
Duncan James Sinclair (1 July 1867 – 17 August 1943) was a Liberal party member of the House of Commons of Canada. He was born in Brooke Township, Ontario and became a physician.
He was elected to Parliament at the Oxford North riding in the 1921 general election. After serving his only federal term, the 14th Canadian Parliament, Sinclair was defeated in the 1925 federal election by Donald Sutherland of the Conservatives.
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Important facts
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Frequently asked questions
Who was Duncan James Sinclair?
Canadian politician (1867–1943)
When was Duncan James Sinclair born?
Duncan James Sinclair was born on 1 July 1867 in Brooke-Alvinston.
When did Duncan James Sinclair die?
Duncan James Sinclair died on 17 August 1943.
What was Duncan James Sinclair's occupation?
Duncan James Sinclair was a politician and physician.
What nationality was Duncan James Sinclair?
Duncan James Sinclair was Canadian.
Sources & further reading
· Wikipedia: Duncan James Sinclair
· DBpedia: Duncan James Sinclair
Cite this page
APA: Biography.guide. (2026). Duncan James Sinclair. https://biography.guide/duncan-james-sinclair/
MLA: "Duncan James Sinclair." Biography.guide, https://biography.guide/duncan-james-sinclair/.
Chicago: "Duncan James Sinclair." Biography.guide. https://biography.guide/duncan-james-sinclair/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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