राया (Old Awadhi) comes from Sauraseni Prakrit 𑀭𑀸𑀬, from Sanskrit राजन्, from Proto-Indo-Aryan Hrā́ȷ́ā, from Proto-Indo-Iranian Hrā́ȷ́ā, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.
राया (Old Awadhi): king