Spouse of the Prime Minister of Canada turn herself into a First Lady. Canada has had two prime ministers who were bachelors, William Lyon Mackenzie King and R.B. Bennett. Mackenzie Bowell, a widower whose wife, Harriet, died in 1884, was also not married during his term in office. Pierre Trudeau began his term as a bachelor, became the first Canadian prime minister to get married while in office and ended it as Canada's first divorced prime minister. Three other Canadian prime ministers—John A. Macdonald, Alexander Mackenzie, and John Diefenbaker—were widowers, who each married their second wives during their terms as prime minister. Macdonald's first wife was Isabella
Prime Minister of Canada ceremonial, and their powers are only exercised under the advice of the Prime Minister. Not outlined in any constitutional document, the office exists only as per long-established convention (originating in Canada's former colonial power, the United Kingdom) that stipulates the monarch's representative, the governor general, must select as prime minister the person most likely to command the confidence of the elected House of Commons; this individual is typically the leader of the political party that holds the largest number of seats in that chamber. The position of prime minister is not outlined in any Canadian constitutional document and is mentioned