What is William Lyon Mackenzie King?
{{Infobox officeholder | honorific-prefix = [[The Right Honourable]] | honorific-suffix = [[Order of Merit|OM]] [[Order of St Michael and St George|CMG]] [[Queen's Privy Council for Canada|PC]] | image = William Lyon Mackenzie King 1942 (cropped).jpg | order1 = 11th, 13th & 15th | office1 = Prime Minister of Canada | term_start1 = October 23, 1935 | term_end1 = November 15, 1948 | monarch1 = [[George V]]<br>[[Edward VIII]]<br>[[George VI]] | governor-general1 = [[Vere Ponsonby, 9th Earl of Bessborough|Earl of Bessborough]]<br>[[John Buchan|Lord Tweedsmuir]]<br>[[Alexander Cambridge, 1st Earl of Athlone|Earl of Athlone]]<br>[[Harold Alexander, 1st Earl Alexander of Tunis|Viscount Alexander]] | predecessor1 = [[R. B. Bennett|Richard Bennett]] | successor1 = [[Louis St. Laurent]] | term_start2 = September 25, 1926 | term_end2 = August 7, 1930 | monarch2 = [[George V]] | governor-general2 = [[Julian Byng, 1st Viscount Byng of Vimy|Lord Byng of Vimy]]<br>[[Freeman Freeman-Thomas, 1st Marquess of Willingdon|Viscount Willingdon]] | predecessor2 = [[Arthur Meighen]] | successor2 = [[R. B. Bennett|Richard Bennett]] | term_start3 = December 29, 1921 | term_end3 = June 28, 1926 | monarch3 = [[George V]] | governor-general3 = [[Julian Byng, 1st Viscount Byng of Vimy|Lord Byng of Vimy]] | predecessor3 = [[Arthur Meighen]] | successor3 = [[Arthur Meighen]] | birth_date = December 17, 1874 | birth_place = [[Kitchener, Ontario|Berlin]], [[Ontario]], [[Canada]] | death_date = {{death date and age|1950|7|22|1874|12|17}} | death_place = [[Chelsea, Quebec|Chelsea]], [[Quebec]], [[Canada]] | restingplace = [[Mount Pleasant Cemetery, Toronto|Mount Pleasant Cemetery]], [[Toronto]], Ontario | party = [[Liberal Party of Canada|Liberal]] | alma_mater = [[Suddaby Public School]]<br>[[University