On December 8, 1974, the monarchy was dissolved via referendum.
The monarchy was established in Greece in the London Protocol (1830) that provided for the creation of an independent Greek state. The first king was Otto, second son of king Ludwig I of Bavaria (Wittelsbach dynasty). After Otto was removed in 1862, George, the second son of the future king of Denmark, Christian IX, was appointed King of Greece (a scion of the Schleswig-Holstein-Sonderburg-Glücksburg dynasty). This dynasty ruled through many exploits, schisms and a number of intermittent breaks in democracy, until 1974.
