The Autonomous Republic of Northern Epirus was a short-lived, self-governing entity founded in the aftermath of the Balkan Wars on 28 February 1914, by the local Greek population in southern Albania (Northern Epirotes).
The area, known as Northern Epirus to Greeks and with a substantial Greek population, was taken by the Greek Army from the Ottoman Empire during the First Balkan War (1912–1913). The Protocol of Florence, however, had assigned it to the newly established Albanian state. This decision was rejected by the local Greeks, and as the Greek Army withdrew to the new border, an autonomous government was set up at Argyrokastron (modern Gjirokastër), under the leadership of Georgios Christakis-Zografos, a distinguished local Greek politician and former Minister of Foreign Affairs, and with tacit support from Greece.
In May, the autonomy was confirmed by the Great Powers with the Protocol of Corfu. The agreement ensured that the region would have its own administration, recognized the rights of the local population and provided for self-government under nominal Albanian sovereignty. However, it was never fully implemented because in September the Albanian government collapsed. The Greek Army reoccupied the area in October 1914 following the outbreak of World War I. It was planned that Northern Epirus would be ceded to Greece following the war, but the withdrawal of Italian support and Greece’s defeat in the Asia Minor Campaign resulted in its final cession to Albania in November 1921.
Source: Hellenic – Greek History And Civilization / Ελληνική Ιστορία και Πολιτισμός