Descent of Crown Prince Alexander from the Danish and Greek Royal Families

Frederick V
King of Denmark and Norway (1746-1766)
*1723 †1766

∞ 1743 Louisa, Princess of Great Britain

*1724 †1751

=

Louise, Princess of Denmark and Norway

*1750 †1831

∞ 1766 Prince Charles of Hesse-Kassel
Field Marshal of Danish Army, Governor of Schleswig-Holstein
*1744 †1836

=

Louise Caroline
Landgravine of Hesse-Kassel

*1789 †1867

∞ 1810 Friedrich Wilhelm, Duke of Schleswig-Holstein-Sounderburg-Glucksburg

=

Christian IX Heir Presumptive, afterwards Crown Prince of Denmark (1815-1863)

King of Denmark (1863-1906)

*1818 †1906

∞ 1842 Louise, Princess of Hesse-Kassel

*1817 †1898

=

William of Schleswig-Holstein-Sonderburg-Glücksburg, afterwards

 George I King of the Hellenes (1863-1913)
*1845 †1913

∞ 1867 Olga Constantinovna, Grand Duchess of Russia

Queen-Regent of Greece (1920)

*1851 †1926

=

Constantine I King of Hellenes (1913-1917 and 1920-1922)

*1868 †1923

∞ 1889 Sophie of Hohenzollern, Princess of Prussia

*1870 †1932

=

Alexander I
King of Hellenes (1917-1920)

*1893 †1920

∞ 1919 Aspasia Manos

*1896 †1972

=

Alexandra
Princess of Greece (Aleksandra, as Queen of Yugoslavia)
*1921 †1993