Where does “Iorwerth” come from?

Iorwerth (Welsh) comes from Middle Welsh Iorwerth, from Middle Welsh berth, from Proto-Brythonic berθ, from Proto-Celtic berxtos, from Proto-Indo-European bʰer(H)ǵ-tó-s, from Proto-Indo-European -tós — Creates verbal adjectives from verb stems.

Ancestry of “Iorwerth”, step by step

StepLanguageWordMeaning
1Middle WelshIorwerth—
2Middle Welshberth—
3Proto-Brythonicberθbeautiful, bright, fine
4Proto-Celticberxtosbright
5Proto-Indo-Europeanbʰer(H)ǵ-tó-s—
6Proto-Indo-European-tósCreates verbal adjectives from verb stems

Words derived from “Iorwerth”

Every word from Proto-Indo-European -tós →Every word from Proto-Indo-European bʰer(H)ǵ-tó-s →Every word from Proto-Celtic berxtos →