Frederik VIII (June 3, 1843 ? May 14, 1912), king of Denmark, eldest son of King Christian IX, was born at Copenhagen. As Crown Prince of Denmark he took part in the war of 1864 against Austria and Prussia, and subsequently assisted his father in the duties of government. He became king of Denmark on Christian's death in January 1906. On July 28, 1869 Frederik married Lovisa of Sweden (October 31, 1851 - March 20, 1926), daughter of Carl XV, King of Sweden and Carl IV, King of Norway. They had four sons and four daughters:

1. Crown Prince Cristian of Denmark(1870-1947), later King Christian X of Denmark. Married Princess Alexandrine of Mecklenburg-Schwerin in 1898 and had issue
2. Prince Carl of Denmark(1872-1957), later King Haakon VII of Norway. Married Princess Maud of Wales in 1896 and had issue
3. Princess Louise of Denmark (1875-1906). Married Prince Friedrich of Schaumburg-Lippe in 1896 and had issue
4. Prince Harald of Denmark (1876-1949). Married Princess Helena of Glücksburg in 1909 and had issue
5. Princess Ingeborg of Denmark (1878-1958) Married Prince Carl of Sweden and Norway in 1897 and had issue
6. Princess Thyra of Denmark (1880-1945) No issue
7. Prince Gustav og Denmark (1887-1944) No issue
8. Princess Dagmar of Denmark (1890-1961) Married Jørgen Carstenskiold and had issue

On his return journey from a trip abroad, Frederik VIII died in Hamburg.

The royal families of Denmark, Norway, Belgium and Luxembourg is descendants from King Fredrick VIII. Denmark comes naturally, Norway's family is goes through the line of his son, Prince Carl, whereas the families of Belgium and Luxemburg are descendants from hist daugther, princess Ingeborg.