Where does “Bielach” come from?

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

Ancestry of “Bielach”, step by step

Bielach traces back through two separate lines of ancestry.

via Old Polish biel

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

via Polish biel

StepLanguageWordMeaning
1Polishbielwhite; sapwood; second-person singular imperative...
Every word from Proto-Indo-European bʰēlHs →Every word from Proto-Slavic bělъ →Every word from Old Polish biel →
Bielach — Etymology, Origin & Word History | Etymology Explorer