Yanka Kupala
Kupala's first serious try at writing was Ziarno.  It was a Polish-language sentimental poem which he completed around 1903–1904. His first Belarusian-language work ("Мая доля") was dated July 15, 1904. Kupala's first published poem, "Мужык" ("Peasant"), was published about a year later.  It was in the newspaper on May 11, 1905. Several more poems by Kupala were in the Belarusian-language newspaper Nasha Niva from 1906 to 1907.