Date of Birth: 
About John Duff Robertson
- John Duff Robertson (March 26, 1873 – 1939) was a druggist and political figure in Saskatchewan.
- He represented Canora in the Legislative Assembly of Saskatchewan from 1908 to 1917 as a Liberal. He was born in Chesterfield, Oxford County, Ontario, the son of the Reverend William Robertson and Elizabeth Duff, and educated in Elora and at the Ontario College of Pharmacy in Toronto.
- He lived in Canora, Saskatchewan.His brother William was a physician in Elora, Ontario, whose daughter Marion married and later divorced Frederick Banting.
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