Pavel Friedman (January 7, 1921 – September 29, 1944) was a Jewish Czechoslovak poet who ‎received posthumous fame for his poem "The Butterfly". Friedman was born in Prague and ‎deported to Theresienstadt concentration camp, in the fortress and garrison city of Terezín (German ‎name Theresienstadt), located in what is now the Czech Republic. He wrote a poem “The Butterfly” ‎on a piece of thin copy paper which was discovered after liberation and later donated to the State ‎Jewish Museum.‎
Little is known of Friedman's life prior to his incarceration at the Theresienstadt concentration ‎camp, where his arrival was recorded on April 26, 1942. On September 29, 1944 he was deported to ‎Auschwitz, where he died.‎

http://en.wikipedia.org/wiki/Pavel_Friedman