Where does “powiernica” come from?

powiernica (Polish) comes from Polish powiernik, from Polish powierzyć, from Polish wierzyć, from Proto-Slavic věriti, from Proto-Indo-European weh₁ros, from Proto-Indo-European weh₁- — true.

Ancestry of “powiernica”, step by step

StepLanguageWordMeaning
1Polishpowierniktrustee, fiduciary; confidant
2Polishpowierzyćto entrust
3Polishwierzyćrely, believe; trust
4Proto-Slavicvěritito believe
5Proto-Indo-Europeanweh₁rostrue
6Proto-Indo-Europeanweh₁-true
Every word from Proto-Indo-European weh₁- →Every word from Proto-Indo-European weh₁ros →Every word from Proto-Slavic věriti →