Where does “dydd Gwener” come from?

dydd Gwener (Welsh) comes from Welsh dydd, from Middle Welsh dyð, from Old Welsh did, from Proto-Brythonic dið, from Proto-Celtic dīyos, from Proto-Indo-European dyḗws, from Proto-Indo-European dyéws, from Proto-Indo-European dyew- — to be bright; sky, heaven.

dydd Gwener (Welsh): Friday

Definitions

  1. Friday

Ancestry of “dydd Gwener”, step by step

dydd Gwener traces back through 3 separate lines of ancestry.

via Welsh dydd

StepLanguageWordMeaning
1Welshdyddday, daytime
2Middle Welshdyðday
3Old Welshdidday
4Proto-Brythonicdiðday, daytime
5Proto-Celticdīyosday
6Proto-Indo-Europeandyḗwssky, heaven; sky god
7Proto-Indo-Europeandyéwssky, heaven
8Proto-Indo-Europeandyew-to be bright; sky, heaven

via Welsh Gwener

StepLanguageWordMeaning
1WelshGwenerVenus, Friday
2LatinVenus{{l|en|Venus}}; the goddess of love; love,...
3Proto-Italicwenoslove
4Proto-Indo-Europeanwénh₁-os
5Proto-Indo-Europeanwenh₁-to love

via Latin dīēs Veneris

StepLanguageWordMeaning
1Latindīēs VenerisFriday
2LatinVeneris
Every word from Proto-Indo-European dyew-Every word from Proto-Indo-European dyéwsEvery word from Proto-Indo-European dyḗws