BağırzadəAzerbaijani Means "descendant of Bağır", using the Persian suffix زاده (zade) meaning "offspring".
BąkowskimPolish Habitational name for someone from any of various places called Bąkowa, Bąkowice, Bąkowiec or Bąkowo, all derived from Polish bąk meaning "horsefly", "bumblebee" or "bittern" (a type of bird).
KöprülüTurkish Derived from Turkish köprü meaning "bridge". It was the name of an influential noble family of Albanian background from the Ottoman Empire.
KostkaPolish From Polish kostka meaning "small bone" or from a form of the name Konstanty.
MəmmədliAzerbaijani From the given name Məmməd and the Turkic suffix -li which forms adjectives from nouns.
ŻakPolish A nickname given to youthful or studious people. Comes from the Polish żak, meaning "student" or "schoolboy". It originally meant "novice" or "candidate for the priesthood", and so in some cases it is perhaps a nickname for someone who had been destined for holy orders.