The area was ruled by the
Ottoman Empire until the
Balkan Wars of 1912–13, in the late 19th and early 20th century as part of
Manastir Vilayet. The population of Nestram consisted of an older local Slavic speaking population and a small
Aromanian population that originated from the nearby village of on the
Gramos mountains that were later assimilated by the Slavonic villagers. Nestram had 2,700 inhabitants in the beginning of the 20th century and most of them were Slavophone (Slavic speaking) Orthodox Christians and a few of them Aromanians. In the early 20th century the majority of the inhabitants of Nestram accepted the rule of the Bulgarian Exarchate. According to the statistics of Vasil Kanchov (Macedonia. Ethnography and Statistics) the inhabitants of Nestram in 1900 were
Bulgarians. The population during the Turkish occupation exceeded 5200+ inhabitants. In 1928, the village received its current Greek name Nestorion (). In 1945, Greek Foreign Minister Ioannis Politis ordered the compilation of demographic data regarding the Prefecture of Kastoria. The village Nestorio had a total of 2000 inhabitants, and was populated by 1300
Slavophones without a Bulgarian national consciousness. In the modern period, the village is
Slavic speaking with a Greek orientation. ==Culture==