Janusz Korczak
Janusz Korczak was born as Henyrk Goldszmit on or  22 July 1878 or 1879. His birth certificate was never discovered (or it does not exist) so his precise birth date is undetermined. His father Jósef Goldszmit was a respected lawyer. Korczak's father Jósef died in a mental hospital on , after being admitted there  six years earlier.