Where does “gwladgarwyr” come from?

gwladgarwyr (Welsh) comes from Welsh gwladgar, from Welsh gwlad, from Middle Welsh gwlat, from Old Welsh gulat, from Proto-Brythonic gwlad, from Proto-Celtic wlatis, from Proto-Indo-European h₂wélh₁tis, from Proto-Indo-European h₂welh₁- — to rule; strong, powerful; hair; wool.

Ancestry of “gwladgarwyr”, step by step

gwladgarwyr traces back through two separate lines of ancestry.

via Welsh gwladgar

StepLanguageWordMeaning
1Welshgwladgar
2Welshgwladcountry, nation, realm, land; countryside
3Middle Welshgwlat
4Old Welshgulatcountry, realm
5Proto-Brythonicgwladsovereignty, country
6Proto-Celticwlatissovereignty
7Proto-Indo-Europeanh₂wélh₁tis
8Proto-Indo-Europeanh₂welh₁-to rule; strong, powerful; hair; wool

via Welsh ŵyr

StepLanguageWordMeaning
1WelshŵyrSoft mutation of gŵyr; grandson, grandchild
2Middle WelshwyrSoft mutation of gwyr
Every word from Proto-Indo-European h₂welh₁-Every word from Proto-Indo-European h₂wélh₁tisEvery word from Proto-Celtic wlatis