Canadian politician, Prime Minister, and erstwhile spiritualist who spoke to his dead mother, da Vinci, dead dogs, & FDR in his spare time, William Lyon Mackenzie King died on July 22, 1950. 

MacKenzie King was PM of Canada for 3 terms – from 1921 to 1926, 1926 to 1930, and 1935 to 1948.  

William Lyon Mackenzie King (1874-1950)
Part of the Prime Ministers series
Issued by Canada’s post office in 1951, a year after his death.
Designer: Herman Herbert Schwartz

Jokes aside, MacKenzie King navigated Canada through some of its most turbulent times – Great Depression, WW2, King-Byng affair that increased Canada’s sovereignty and tricky relations with the US and the Soviet Union during the early days of the Cold War. 

It was his government that introduced the Canadian Citizenship Act in 1946 which conferred Canadian citizenship, not British subject standing, on all Canadians. King received Canadian citizenship certificate number 0001. 

Consummate politician who was utterly wrong headed on many issues, including his initial positive view of Hitler and denying refuge to Jews fleeing Germany prior to the war and later imprisonment of Japanese Canadians under the War Measures Act.