Where does “Wilkos” come from?

Wilkos (Polish) comes from Polish Wilk, from Old Polish wilk, from Proto-Slavic vьlkъ, from Proto-Balto-Slavic wilkás, from Proto-Indo-European wĺ̥kʷos — wolf.

Ancestry of “Wilkos”, step by step

StepLanguageWordMeaning
1PolishWilkLupus
2Old Polishwilkwolf
3Proto-Slavicvьlkъwolf
4Proto-Balto-Slavicwilkáswolf
5Proto-Indo-Europeanwĺ̥kʷoswolf
Every word from Proto-Indo-European wĺ̥kʷos →Every word from Proto-Balto-Slavic wilkás →Every word from Proto-Slavic vьlkъ →