About Olav V
Olav V (Norwegian: Olav den femte, Norwegian pronunciation: [ˈûːlɑːv dɛn ˈfɛ̂mtə]; born Prince Alexander of Denmark; 2 July 1903 – 17 January 1991) was King of Norway from 1957 until his death in 1991. Olav was born at Sandringham House in England, the only child of Prince Carl of Denmark and Princess Maud of Wales. He became heir apparent to the Norwegian throne when his father was elected King Haakon VII of Norway in 1905. He was the first heir to the Norwegian throne to be brought up in Norway since Olav IV in the 14th century, and his parents made sure that he was given as Norwegian an upbringing as possible. In preparation for his future role, he attended both civilian and military schools. In 1929, he married his first cousin, Princess Märtha of Sweden. During World War II, his leadership was much appreciated, and he was appointed Norwegian Chief of Defence in 1944. Olav became king following the death of his father in 1957. His considerate, down-to-earth style made Olav immensely popular, resulting in the nickname Folkekongen ('The People's King'). In a 2005 poll by the Norwegian Broadcasting Corporation, Olav was voted "Norwegian of the Century".
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.