Where does “Kazlauskas” come from?

Kazlauskas (English) comes from Lithuanian Kazlauskas, from Polish Kozłowski, 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 “Kazlauskas”, step by step

StepLanguageWordMeaning
1LithuanianKazlauskas—
2PolishKozłowski—
3PolishKoziołbillygoat
4Old Polishkozieł—
5Proto-Slavickozьlъhe-goat, buck
6Proto-Slavickožaskin; leather
7Proto-Slavic-jaSuffix creating feminine action nouns, usually...
8Proto-Indo-European-yeh₂—
Every word from Proto-Indo-European -yeh₂ →Every word from Proto-Slavic -ja →Every word from Proto-Slavic koža →