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 == Kyustendil == 

 Kyustendil was known ""Küstendil"" and ""Köstendil"" during Ottoman rule. Before belonging to Principality of Bulgaria she had very large Turkish people. Most of them were killed or forced migration to Turkey during Ottoman-Russian battle between 1877-1878. Some Turks have surnames of Köstendil and Köstendilli.  "