Haakon VII
He became the King of Norway when his grandfather, Christian IX was still the King of Denmark, and that before his father and elder brother became kings of Denmark. During his reign he saw his father Frederick VIII, his elder brother Christian X, and his nephew Frederick IX ascend the throne of Denmark, in 1906, 1912 (also of Iceland from 1918 to 1944), and 1947 respectively. Haakon died on 21 September 1957 at the age of 85 after a long 52-year reign. He was succeeded by his only son, Olav, who ascended to the throne as Olav V.