Where does “brodyr” come from?

brodyr (Welsh) comes from Welsh brawd, from Old Welsh braut, from Proto-Brythonic *brọdr, from Proto-Celtic brātīr, from Proto-Indo-European bʰréh₂tēr — brother.

Ancestry of “brodyr”, step by step

StepLanguageWordMeaning
1Welshbrawdbrother; friar; judgement, verdict
2Old Welshbrautbrother; friar; judgment, legal decision
3Proto-Brythonic*brọdrbrother
4Proto-Celticbrātīrbrother
5Proto-Indo-Europeanbʰréh₂tērbrother
Every word from Proto-Indo-European bʰréh₂tēr →Every word from Proto-Celtic brātīr →Every word from Proto-Brythonic *brọdr →