Constantine I of Greece Oldenburg ^{1 2}

   Another name for Constantine was Constantine Schleswig-Holstein I.

  Noted events in his life were:

• Acceded: King of Greece, 18 Mar 1913.

• Deposed: 1917-1920.

• Abdicated: 27 Sep 1922.

Constantine married Sophie Dorothea Ulrica Hohenzollern, daughter of Frederick III of Germany Hohenzollern and Victoria Adelaide Mary Wettin, on 27 Oct 1889 in Athens, Greece. (Sophie Dorothea Ulrica Hohenzollern was born on 14 Jun 1870 in Neues Palais, Potsdam, Germany and died on 13 Jan 1932 in Frankfurt-am-Main, Germany.)