and Arabs continued to regard the Eastern Roman (Byzantine) Greeks as "Romans" (Arabic: ar-Rūm) after the fall of the Western Roman Empire, for instance, the 30th surah of the Quran (Ar-Rum) refers to the defeat of the Byzantines ("Rum" or "Romans") under Heraclius by the Persians at the Battle of Antioch (613), and promises an eventual Byzantine ("Roman") victory. This traditional designation of the Byzantines as [Eastern] Romans in the Muslim world continued through the Middle Ages, leading to names such as the Sultanate of Rum ("Sultanate over the Romans") in conquered Anatolia and personal names such as Rumi, the mystical Persian poet who lived in formerly Byzantine Konya in the 1200s. Late medieval Arab geographers still saw the Byzantines as Rum (Romans) not as Greeks, for instance Ibn Battuta saw the, then collapsing, Rum as "pale continuators and successors of the ancient Greeks (Yunani) in matters of culture." The Muslim Ottomans also referred to their Byzantine Greek rivals as Rûm, "Romans", and that term is still in official use in Turkey for the Greek-speaking natives (Rumlar) of Istanbul cf. Ecumenical Patriarchate of Constantinople (, "Roman Orthodox Patriarchate"). Many place-names in Anatolia derive from this Turkish word (Rûm, "Romans") for the Byzantines: Erzurum ("Arzan of the Romans"), Rumelia ("Land of the Romans"), and Rumiye-i Suğra ("Little Rome", the region of Amasya and Sivas). Post-Byzantine history Forming the majority of the Byzantine Empire proper at the height of its power, the Byzantine Greeks gradually came under the dominance of foreign powers with the decline of the Empire during the Middle Ages. The majority of Byzantine Greeks lived in the Ionian islands, the southern Balkans, and Aegean islands, Crete and Asia Minor. Following the end of the Byzantine Empire in 1453, there were many migration waves of Byzantine Greek scholars and emigres to the west, which is considered by many scholars key to the revival of Greek studies that led to the development of the Renaissance humanism and science. These emigres brought to Western Europe the relatively well-preserved remnants and accumulated knowledge of their own (Greek) civilization, which had mostly not survived the Early Middle Ages in the West. By 1500, the Greek community of Venice numbered about 5,000 members. The community was very active in Venice with the notable members such as Anna Notaras (the daughter of Loukas Notaras, the last megas doux of the Byzantine Empire), Thomas Flanginis (the founder