Many Crimean Goths were Greek speakers and many non-Gothic Byzantine citizens were settled in the region called "Gothia" by the government in Constantinople. A Gothic principality around the stronghold of Doros (modern Mangup), the Principality of Theodoro, continued to exist through various periods of vassalage to the Byzantines, Khazars, Kipchaks, Mongols, Genoese and other empires until 1475, when it was finally incorporated in the Khanate of Crimea and the Ottoman Empire. This is generally considered to be the fall of the Crimean Goths.