Where does “glés” come from?

glés (Old Irish) comes from Proto-Indo-European ǵʰel- — to shine, glimmer, glow; to shimmer, gleam;...

Ancestry of “glés”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	ǵʰel-	to shine, glimmer, glow; to shimmer, gleam;...

glés — Etymology, Origin & Word History | Etymology Explorer