Where does “Duw” come from?
Duw (Middle Welsh) comes from Old Welsh duiu, from Proto-Brythonic duɨw, from Proto-Italic deiwos, from Proto-Indo-European deywós, from Proto-Indo-European dyew- — to be bright; sky, heaven.
Ancestry of “Duw”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Old Welsh | duiu | — |
| 2 | Proto-Brythonic | duɨw | god |
| 3 | Proto-Italic | deiwos | god, deity |
| 4 | Proto-Indo-European | deywós | god |
| 5 | Proto-Indo-European | dyew- | to be bright; sky, heaven |