Constantine I, King of the Hellenes (Κωνσταντίνος A', Βασιλεύς των Ελλήνων; 2 August, 1868 - 11 January 1923) was King of Greece from 1913 to 1917 and from 1920 to 1922. He was Commander-in-Chief of the Hellenic Army during the unsuccessful Greco-Turkish War of 1897 and led the Greek forces during the successful Balkan Wars of 1912-1913, in which Greece captured Thessaloniki, and doubled in area and population. He succeeded to the throne of Greece on 18 March 1913, following his father's assassination.
His disagreement with Eleftherios Venizelos over whether Greece should enter World War I led to the National Schism. Constantine forced Venizelos to resign twice, but in 1917 he abdicated, after threats of the Entente forces to bombard Athens; he left the Crown to his second son, Alexander. After Alexander's death, Venizelos' defeat in the 1920 legislative elections, and a plebiscite in favor of his return, Constantine reassumed his duties as King. Constantine abdicated the throne for the second and last time in 1922, when Greece lost the Greco-Turkish War of 1920-1922. He was succeeded by his eldest son, George II.
The organization of the first modern Olympics in Athens was another issue causing a Constantine-Trikoupis confrontation; after Deligiannis' electoral victory in 1895 the pro-Olympic movement prevailed. Constantine was instrumental in the organization of the 1896 Summer Olympics; according to Pierre de Coubertin, in 1894 "the Crown Prince learned with great pleasure that the Games will be inaugurated in Athens." Coubertin assured that "the King and the Crown Prince will confer their patronage on the holding of these games." Constantine later conferred more than that; he eagerly assumed the presidency of the 1896 organizing committee. At the Crown Prince's request, wealthy businessman George Averoff agreed to pay for the restoration of the Panathinaiko Stadium, donating c. one million drachmas.
He succeeded to the throne of Greece on 18 March 1913 following his father's assassination in Salonica by Alexander Schinas, Greek anarchist (born in Volos, Greece 1870). Constantine was faced with the difficulty of determining, officially, where Greece's support lay once war was under way. This was complicated by the fact that his government, led by Eleftherios Venizelos, was pro-Allied and the fact that the Entente Powers were the dominant naval power in the Mediterranean.
Constantine's sympathies emerged during the Allies' disastrous Battle of Gallipoli. Despite popular support of Venizelos amongst the people and his clear majority in Parliament, Constantine disagreed with Venizelos's increasing support for the Allies. In October 1915, Venizelos resigned as Prime Minister after the two of them had argued over the shape of future policy. In his place Constantine appointed Alexandros Zaimis at the head of a short-lived coalition government.
In July 1916 arsonists set fire to the forest surrounding the royal palaces at Tatoi. Although injured in the escape, the King and his family managed to find refuge. The flames spread quickly in the dry summer heat, and sixteen people were killed.
The Allied Commander in Greece, French General Maurice Sarrail, was extremely high-handed and disdainful of King Constantine. By threats and intimidation he forced the Greeks to demobilize their army (in mid-1916) and then forced them to remove all their troops to the south of the country in early 1917. Venizelos went to Thessalonica where, with the support of General Sarrail, he established a provisional revolutionary government. With civil war apparently imminent, Constantine sought from Germany firm promises of naval, military and economic assistance - without success.
Early in 1917, General Sarrail ordered the Greek army to move to the south of the country. He also ordered the Greek fleet to join the Allies and finally, Sarrail ordered the Greek government to adopt a more friendly attitude towards the Allies. In the face of the large Allied army in Greece, King Constantine abdicated the throne in favour of his second son Alexander. The Allied Powers were opposed to Constantine's first son, George, becoming King as he had served in the German army before the war and was identified with his father's pro-Central policies. Constantine left Greece for exile in Switzerland on 11 June 1917. General Sarrail was himself removed in November 1917 and replaced by a more diplomatic French General. Civil war in Greece was avoided.
Within two years his popularity was lost. The Greco-Turkish War of 1920-1922 proved disastrous for the Greeks, as the Turks regained their former territory in Anatolia and Smyrna. He abdicated the throne again on 27 September 1922 and was succeeded by his eldest son, George II.
He spent the rest of his life in exile in Italy and died in 1923 at Palermo, Sicily.
| Name | Birth | Death | Notes |
|---|---|---|---|
| George II, King of the Hellenes | 20 July 1890 | 1 April 1947 | married Princess Elisabeth of Romania |
| Alexander I, King of the Hellenes | 1 August 1893 | 25 October 1920 | married Aspasia Manos |
| Princess Helen of Greece and Denmark | 2 May 1896 | 28 November 1982 | married Carol II, King of Romania |
| Paul I, King of the Hellenes | 14 December 1901 | 6 March 1964 | married Princess Frederika of Hanover |
| Princess Irene of Greece and Denmark | 13 February 1904 | 15 April 1974 | married Prince Aimone of Savoy, 4th Duke of Aosta |
| Princess Katherine of Greece and Denmark | 4 May 1913 | 2 October 2007 | married Richard Brandram |
Michalopoulos, Dimitris, "Constantine XII, King of the Hellenes. An outline of his personality and times", Parnassos, vol. 46, pp.355-360.