Where does “Heindrikur” come from?

Heindrikur (Faroese) comes from Old Norse Heimríkr, from Proto-Germanic Haimarīks, from Proto-Germanic rīks, from Proto-Celtic rīxs, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

Ancestry of “Heindrikur”, step by step

StepLanguageWordMeaning
1Old NorseHeimríkr—
2Proto-GermanicHaimarīksHenry
3Proto-Germanicrīksking, ruler
4Proto-Celticrīxsking
5Proto-Indo-Europeanh₃rḗǵsking, ruler
6Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just
Every word from Proto-Indo-European h₃reǵ- →Every word from Proto-Indo-European h₃rḗǵs →Every word from Proto-Celtic rīxs →