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 Czernelecki died in 1994.
Zbigniew Jaremski died in 2011.
Zbigniew Morsztyn died in 1689.
Zbigniew Burzyński died in 1971.
Zbigniew Gołąb died in 1994.
Zbigniew Bieńkowski died in 1994.
Zbigniew Załuski died in 1978.
Zbigniew Wóycicki died in 1928.
Zbigniew of Brzezia died in 1425.