Anatol Lewicki died in 1899.
Mikolaj Lewicki died on August 1, 1944, in Warsaw, Mazowieckie, Poland.
Zbigniew Lewicki died on August 24, 2013, in Ldz, Ldzkie, Poland.
Kazimierz Flatau died in 2000.
Kazimierz Narutowicz died in 1987.
Kazimierz Pietkiewicz died in 1934.
Kazimierz Alchimowicz died in 1916.
Kazimierz Gilarski died in 2010.
Kazimierz Idaszewski died in 1965.
Kazimierz Lis died in 1998.
Kazimierz Lux died in 1846.
Kazimierz Prószyński died in 1945.