John Duff Robertson
John Duff Robertson was a druggist and political figure in Saskatchewan. He represented Canora (provincial [electoral district)|Canora] in the Legislative [Assembly of Saskatchewan] from 1908 to 1917 as a Liberal Party|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.