Where does “gwreic” come from?

gwreic (Middle Welsh) comes from Proto-Brythonic gwrėg, from Proto-Celtic gʷrakī.

Ancestry of “gwreic”, step by step

StepLanguageWordMeaning
1Proto-Brythonicgwrėgwoman, female human; wife
2Proto-Celticgʷrakī—
Every word from Proto-Celtic gʷrakī →Every word from Proto-Brythonic gwrėg →
gwreic — Etymology, Origin & Word History | Etymology Explorer