Bielawski (Polish) comes from Polish Bielawy, from Polish -awy, from Polish szpat, from German spät, from Middle High German spǣte, from Old High German spāti, from Proto-West Germanic *spādī, from Proto-Germanic spēdiz — to succeed, to prosper.
Ancestry of “Bielawski”, step by step
Bielawski traces back through 3 separate lines of ancestry.