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 ::You are wrong. Kościuszko himself did not speak Belarusian; his family had become Polonized as early as the 16th century.[16] Like most Polish-Lithuanian nobility of that time, the Kościuszko family spoke Polish and identified themselves with the Polish culture.[17] The fact that he was born in present day Belarus is ridiculous because he wasn't born 'in present days' but in Polish–Lithuanian Commonwealth when many ethnic Poles were living in Belarus. The fact that he had Belarusian ancestors 200 yeasr before his birth doesn't make him Belarusian. Would be better for you to include someone more Belarusian, just saying... 
 16^ ""Костюшко Тадеуш Андрей Бонавентура – 100 ВЕЛИКИХ АРИСТОКРАТОВ – всемирная история"" [Kościuszko, Tadeusz Andrzej Bonawentura – 100 Great Aristocrats – World History] (in Belarusian). History.vn.ua. Retrieved November 17, 2012. 
 17^ Storozynski, 2011 p.27  — Preceding unsigned comment added by