Where does “bielszczanin” come from?

bielszczanin (Polish) comes from Polish Bielsko, from Polish Biel, from Old Polish biel, from Proto-Slavic bělъ, from Proto-Indo-European bʰēlHs — white surface or stain.

Ancestry of “bielszczanin”, step by step

bielszczanin traces back through two separate lines of ancestry.

via Polish Bielsko

StepLanguageWordMeaning
1PolishBielsko
2PolishBielwhite
3Old Polishbielmud, swamp
4Proto-Slavicbělъwhite
5Proto-Indo-EuropeanbʰēlHswhite surface or stain

via Polish Bielsk

StepLanguageWordMeaning
1PolishBielsk
Every word from Proto-Indo-European bʰēlHsEvery word from Proto-Slavic bělъEvery word from Old Polish biel