Where does “reig” come from?

reig (Old Catalan) comes from Latin rēgem, from Proto-Italic rēks, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

Ancestry of “reig”, step by step

StepLanguageWordMeaning
1Latinrēgem—
2Proto-Italicrēksking
3Proto-Indo-Europeanh₃rḗǵsking, ruler
4Proto-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-Italic rēks →