Where does “Fionnghlas” come from?

Fionnghlas (Irish) comes from Irish Fionn, from Old Irish find, from Proto-Celtic Kʷennowindos, from Proto-Celtic windos, from Proto-Indo-European windo-, from Proto-Indo-European weyd- — to see.

Ancestry of “Fionnghlas”, step by step

Fionnghlas traces back through two separate lines of ancestry.

via Irish Fionn

StepLanguageWordMeaning
1IrishFionnfair (of hair or complexion)
2Old Irishfindwhite
3Proto-CelticKʷennowindoswhite-headed, white-faced
4Proto-Celticwindoswhite
5Proto-Indo-Europeanwindo-
6Proto-Indo-Europeanweyd-to see

via Irish Glas

StepLanguageWordMeaning
1IrishGlasgreen
2Old Irishglasgreen, greenish; blue, green-blue, grey-blue; the...
3Proto-Celticglastosgreen, blue
4Proto-Indo-Europeanǵʰl̥h₃stós
5Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow
Every word from Proto-Indo-European weyd-Every word from Proto-Indo-European windo-Every word from Proto-Celtic windos
Fionnghlas — Etymology, Origin & Word History | Etymology Explorer