William Lyon MacKenzie King (1874-1950) was Prime Minister of Canada for 22 years.  He was a devoted, practicing Presbyterian that kept his interest in the Spiritualist Church a secret for more than 25 years.  He devoted his life to psychic mediums, studying life after death, communicated with the dead and was a practicing Spiritualist.  He was a kindly, lonely man, who never married.
His very close friends and those in the government who worked with him knew about his secret interests and often joined with him in attending seances and using the ouija board to contact his deceased friends and relatives successfully.
He was introduced to spirit communication by the Marchioness of Aberdeen.  By the early 1920s he was talking with his spirit friends.  He never consulted the spirits on matters of government affairs, only for his own personal consultations.  Each spirit reading was carefully scrutinized by him, even so, he firmly believed he'd made contact with his dog- Pat, his mother, his sister Isabel, brother Macdougall, Franklin D. Roosevelt, who was a good friend; and another good friend, Sir Wilfrid Laurier.
Had he not been so important and public a figure, he would have joined the London Institute For Psychic Research.  He had visited several reputable mediums in England.  During 1920, through 1937, he became part of a circle of important public figures researching and practicing spiritualism.  One good friend was Baron Erik Kule Palmatierna (1877-1959), a Swedish diplomat.  The Baron soon wrote and published a book in 1938 called "Horizons Of Immortality; A Quest For Reality," of which King was very much intrigued with its contents.  King could not agree with the Baron's belief in reincarnation because this fact was not proven to him.  But he did agree with the Baron's beliefs on life after death and the ability to talk to spirits, for through mediums and the ouija board, the spirits who contacted him had given him proof enough.