John Douglas Armour, born on May fourth, eighteen thirty, in the township of Otonabee, Upper Canada, was a distinguished Canadian Puisne judge of the Supreme Court of Canada. He was the son of Samuel Armour and received his early education at Upper Canada College. In eighteen fifty, he earned a Bachelor of Arts degree from the University of Toronto, laying the foundation for a remarkable legal career.
After completing his education, Armour began his legal journey by articling with his brother, Robert Armour, and subsequently with Philip Michael Matthew Scott VanKoughnet. He was called to the Bar in eighteen fifty-three and dedicated the next twenty-five years to practicing law in Cobourg, Ontario, where he built a reputation for his legal acumen and integrity.
In eighteen seventy-seven, Armour's contributions to the legal field were recognized when he was appointed to the Court of Queen's Bench of Ontario. His leadership qualities shone through, and he was named chief justice in November of the same year. His judicial career continued to flourish, culminating in his appointment as Chief Justice of Ontario in nineteen oh one, a position that underscored his significant impact on the Canadian legal landscape.