Janusz Warnecki's birth name is Jan Kozlowski.
Janusz Warnecki was born on July 2, 1895, in Warsaw, Poland, Russian Empire [now Warsaw, Mazowieckie, Poland].
Janusz Christa died in 2008.
Janusz Szpotański died in 2001.
Janusz Patrzykont died in 1982.
Janusz Bokszczanin died in 1973.
Janusz Minkiewicz died in 1981.
Janusz Witwicki died in 1946.
Janusz Magnuski died in 1999.
Janusz Pasierb died in 1993.
Janusz Przymanowski died in 1998.
Janusz Suchywilk died in 1382.