Albanian-speakers of Western Thrace migrated towards today's European Turkey (Eastern Thrace), especially near Istanbul. Many Muslim Albanians achieved high office in Ottoman society and many of them, most notably the Köprülü family, became Grand Viziers of the Empire. The majority of the Albanian emigration came from Northern Kosovo and the Korça region of Albania. Descendants of this immigrants would later play an important role in the National Renaissance of Albania. The number of Albanians that resided in the region is unknown, as statistical data of the Ottoman Empire were based on religious identification (millets). Thus, the Orthodox Albanians were part of the Rûm millet,
Turks of Western Thrace which had been victorious in the First Balkan War. France occupied the area at the end of the First World War, following the defeat of Bulgaria, and it passed into Greek hands under the Treaty of Sèvres in August 1920. Under a protocol of the same year, the Turks of Western Thrace were exempted from the 1922-1923 exchange of populations agreement between Greece and Turkey and were granted rights within the framework of the Lausanne Treaty. However, since 1923, between 300,000 and 400,000 Turks have left Western Thrace most of which have immigrated to Turkey. It should be emphasised that