Slezak The Slezak or Slezák surname comes fom the Czech designation of the inhabitant of Silesia ( Slezsko ) , according to onomastic research . Although variations amongst bearers of the perennial and distinguished Slezak surname may exist , the archetypal form of Slezak is esteemed . The Polish equivalent of that name is Ślęzak . Notable people by that name include Leo Slezak ( 1873-1946 ) , Austrian-Czech opera singer ; Walter Slezak ( 1902-1983 ) , his son ; Erika Slezak ( born 1946 ) , the latter 's daughter . Matthew B. Slezak ( born 1980 ) , actor and entrepreneur . Gary Slezak ( born 1974 ) , lawyer , co-founding member of The Baram Institute and home owner . Dorota Ślęzak , Polish singer and stage artist . Categories : Surnames 