Where does “rajko” come from?

rajko (Polish) comes from Polish raj, from Proto-Slavic rajь, from Proto-Iranian raHíš, from Proto-Indo-Iranian raHíš, from Proto-Indo-European reh₁ís — wealth, goods.

Ancestry of “rajko”, step by step

StepLanguageWordMeaning
1Polishrajparadise; heaven; second-person singular...
2Proto-Slavicrajьparadise
3Proto-IranianraHíš—
4Proto-Indo-IranianraHíšwealth, property, goods
5Proto-Indo-Europeanreh₁íswealth, goods
Every word from Proto-Indo-European reh₁ís →Every word from Proto-Indo-Iranian raHíš →Every word from Proto-Iranian raHíš →