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Foreign Royalty, Personalities, pic: 1929, Crown Prince Olav (Olaf) of Norway pictured with Princess Martha of Sweden after they had announced their engagement, Crown Prince Olav (1903-1991) succeeded his father King Haakon VII in 1957 becoming King Olav V (Photo by Haynes Archive/Popperfoto/Getty Images)

Foreign Royalty, Personalities, pic: 1929, Crown Prince Olav (Olaf) of Norway pictured with Princess Martha of Sweden after they had announced their engagement, Crown Prince Olav (1903-1991) succeeded his father King Haakon VII in 1957 becoming King Olav V  (Photo by Haynes Archive/Popperfoto/Getty Images)