When was frederic chopin born?

Everything you need to know:
http://en.wikipedia.org/wiki/Chopin

Born: Zelazowa Wola, west of Warsaw, Poland, 1st March 1810

(I have seen 22-Feb-1810 mentioned, but usually 1st March seems to be the date given)

Leo A

1st of March, 1810 in the village of Zelazowa Wola, Duchy of Warsaw.