Jan Czeczot. The second edition of that anthology, published in 1844 under the title of "Piosnki wieśniacze znad Niemna z dołączeniem pierwotwornych w mowie słowiańsko-krewickiej" ("Folk Songs of the Neman River with Originals Written in Slavic-Krevich Language"), was significantly expanded and included many translations of his works to what could be seen as a predecessor of modern Belarusian. Wikipedia
The definitive Wikipedia entry for Jan Czeczot. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Jan_Czeczot
