Jan Kurnakowicz was born on January 27, 1901, in Vilnius, Lithuania, Russian Empire [now Lithuania].
Jan Kurnakowicz died on October 4, 1968, in Warsaw, Mazowieckie, Poland.
Jan Hanford was born in 1953.
Jan Harrison was born in 1944.
Jan Smit was born on December 31, 1985.
Jan Bruins was born in 1940.
Jan Goossens was born on 1958-12-18.
Jan Huyghebaert was born in 1945.
Jan Słomka was born in 1842.
Jan Egeland was born in 1957.
Jan Kozietulski was born in 1781.
Jan Mathiasen was born in 1957.
Jan Huijgen was born in 1888.