Where does “Kachinsky” come from?

Kachinsky (English) comes from Polish Kaczyński, from Polish -ski, from Old Polish -ski, from Proto-Slavic -ьskъ, from Proto-Indo-European -iskos — Characteristic of, typical of, pertaining to.

Ancestry of “Kachinsky”, step by step

StepLanguageWordMeaning
1PolishKaczyński—
2Polish-skiforms surnames; forms adjectives
3Old Polish-skiforms adjectives
4Proto-Slavic-ьskъ-ic, -ish
5Proto-Indo-European-iskosCharacteristic of, typical of, pertaining to
Every word from Proto-Indo-European -iskos →Every word from Polish -ski →Every word from Proto-Slavic -ьskъ →