Where does “Kozłowska” come from?

Kozłowska (Polish) comes from Polish Kozioł, from Old Polish kozieł, from Proto-Slavic kozьlъ, from Proto-Slavic koža, from Proto-Slavic -ja, from Proto-Indo-European -yeh₂.

Ancestry of “Kozłowska”, step by step

StepLanguageWordMeaning
1PolishKoziołbillygoat
2Old Polishkozieł—
3Proto-Slavickozьlъhe-goat, buck
4Proto-Slavickožaskin; leather
5Proto-Slavic-jaSuffix creating feminine action nouns, usually...
6Proto-Indo-European-yeh₂—
Every word from Proto-Indo-European -yeh₂ →Every word from Proto-Slavic -ja →Every word from Proto-Slavic koža →