Olav V (born Prince Alexander of Denmark; 1903–1991) was King of Norway from 1957 until his death. Olav was the only child of King Haakon VII of Norway and Maud of Wales. He became heir apparent to the Norwegian throne when his father was elected King of Norway in 1905.

He was the first heir to the Norwegian throne to be brought up in Norway since Olav IV in the fourteenth century, and his parents made sure 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 MΓ€rtha of Sweden. During World War II his leadership was much appreciated and he was appointed Norwegian Chief of Defence in 1944.

Owing to his considerate, down-to-earth style, King Olav was immensely popular, resulting in the nickname 'Folkekongen' ("The People's King"). In January 1991, he suddenly became ill and died. On the night of his death and for several days up until the state funeral, Norwegians mourned publicly, lighting hundreds of thousands of candles in the courtyard outside the Royal Palace in Oslo, with letters and cards placed amongst them.

An interview given by King Harald V and hints in a biography by Jo Benkow, who was the President of the Storting at that time, mention the possibility that King Olav suffered great trauma upon learning of the outbreak of the first Gulf War, which began the day of his death. Olav's son Harald V succeeded him as King.

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