These are the Kings of Greece:
House of Schleswig-Holstein-Sonderburg-Glücksburg
- George I (1863 - 1913) a Danish prince who had been offered the throne
- Constantine I (1913 - 1917) first time
- Alexander (1917 - 1920)
- Constantine I (1920 - 1922) second time
- George II (1922 - 1923) first time
Republic 1973 - present [2]