Where does “Romarici” come from?

Romarici (Medieval Latin) comes from Latin Romaricus, 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 “Romarici”, step by step

StepLanguageWordMeaning
1LatinRomaricus—
2Proto-Germanicrīksking, ruler
3Proto-Celticrīxsking
4Proto-Indo-Europeanh₃rḗǵsking, ruler
5Proto-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 →