Borys Borkowski died on August 14, 1988, in Slupsk, Pomorskie, Poland.
Leopold Borkowski died on December 15, 2001, in Warsaw, Mazowieckie, Poland.
Witold Borkowski died on November 5, 1995, in Warsaw, Mazowieckie, Poland.
Zbigniew Załuski died in 1978.
Zbigniew Wóycicki died in 1928.
Zbigniew Dłubak died in 2005.
Zbigniew Bieńkowski died in 1994.
Zbigniew of Brzezia died in 1425.
Zbigniew Jaremski died in 2011.
Zbigniew Gołąb died in 1994.
Zbigniew Wassermann died in 2010.
Zbigniew Raszewski died in 1992.