William Lyon Mackenzie King (1874 -1950) - aka Mackenzie King. 10th Prime Minister of Canada. Champion of Canadian autonomy within the British Commonwealth, and best known for his leadership of Canada throughout all of the Second World War (1939-1945).
For his involvement in Spiritualism, read A Real Companion and Friend: The diary of William Lyon Mackenzie King.
For his involvement in Spiritualism, read A Real Companion and Friend: The diary of William Lyon Mackenzie King.