Alexander Mackenzie (politician) in the context of "Mackenzie Mountains"

The Supreme Court of Canada is the highest court of Canada. It was established by the Parliament of Canada through the Supreme and Exchequer Court Act of 1875. Since 1949, the Court has been the final court of appeal in the Canadian justice system. Originally composed of six justices (the Chief Justice of Canada and five puisne justices), the Court was expanded to seven justices by the creation of an additional puisne justice position in 1927, and then to nine justices by the creation of two more puisne justice positions in 1949.

The justices are appointed by the governor general on the advice of the prime minister. When a chief justice leaves office, the vacancy is traditionally filled by elevating an incumbent puisne justice to the position, which requires a separate appointment process. The first six justices of the Court were all appointed in 1875 by Governor General the Earl of Dufferin, on the advice of Prime Minister Alexander Mackenzie.